English Rules - As of April 27, 2013.

General Rule: "Any clan or player that tries to manipulate rules may suffer consequences at the staff's discretion."

I. Registration

a. Players registering must register with an IP address of their very own and not with any other player participating in the IL.
b. Players may only register for one team.
c. Only main clans are allowed to register for the league. Sub-clans and communities are prohibited from joining.
d. Regardless of whether a player uses a friend code or not, they must post the friend codes that belong to their wii(s) and only use these codes for league events.
e. Players are allowed to only play for the team they have signed up for.
f. If you are not apart of a main clan you are not allowed to play for a team unless if you are trialing for x clan or if it is a subclan that you are a member of

h. Registrations made after 11:59pm GMT Saturday will not be able to play for that week's match.
h. Transfers may be done 4 weeks after their last transfer/registration.
i. However, those who transfer after a week's originally scheduled war time will not be able to participate in that war if the war is rescheduled to a later date/time (post-Sunday) rather than a previous date/time. (They are considered a part of the team they were registered for until all matches at that time are completed)
j. If an unregistered player is caught playing for a clan, that player will lose their points or receive -100 chosen at staff discretion.

II. Mii Names

a. Clan tags must be placed clearly at the beginning or end of a mii name, separated in some sort of fashion.
b. Tags must be similar to those being used by other clanmates.
c. Names being used by one may not be that of another registered name from the clan he/she is in or the clan they are playing.
d. Any of the above rules broken result in a -10 penalty.

III. War Structure

a. The default war size is 5v5; however, war sizes are to be determined ultimately by the teams playing if both parties agree to a size.
b. Teams with less than 5 players and unable to agree to a war size must go handicapped or reschedule (on the opponent's consent).
c. Gentlemen's agreements are not allowed. Only players who have correctly registered for their clan with the right FCs are allowed to play. (Even if they happen, they will not be accepted so don't let your opponents deceive you)
Note: This does not include conditionals and hostin agreements
d. War duration is to last for 3 Grand Prixes.
e. Courses may not be selected more than once per clan war unless they are picked off of a random selection.
f. Players may not use the following glitches:
- Coconut Mall
- DK Jungle Parkway
- Mario Circuit
- Maple Treeway
- Mushroom Gorge
- Grumble Volcano
- Rainbow Road
- Wario's Gold Mine
g. Those glitching will incur a -50 penalty for each person and every action of glitching they do.
h. Repeating tracks is not allowed and will incur a -15 penalty on the team with a player repeating a track (that is not chosen by a selection of a random course).

IV. Disconnections, Player Compensation

a. Hosts must disconnect after each race a person disconnects in unless they have disconnected more than two times and/or if there is consent to continue.
b. Hosts must disconnect if there are 9 people on the voting screen unless there is consent to continue.
c. Players receive +15 if they disconnect within the first two races (assuming play is continued) if they do not have more points with a picture provided. Otherwise, they retain whatever points they had and gain +3 per every race they miss. This does not include the race they disconnected on.
d. If all participating racers appear on the results screen, the race counts (with the exception of rule e. & f.)
e. If 4 or more people d/c and at least two is from each team, the race does not count
.
f. If more than 2 people disconnect simultaneously² and at least 1 from each team, the race does not count.
g. Missing players receive +12 per GP.

² A videoproof is needed if one of the teams don't agree.

V. Hosting

a. Hosting teams must provide the opposing team with a host friend code at least 5 minutes before the scheduled/agreed start time.
b. The host must open the room within 5 minutes from the scheduled/agreed time, unless consent from the opposition is given to wait longer.
c. The host must not open the room earlier than 5 minutes before the scheduled/agreed time without consent from the opposition.
d. Hosts who break c. must close/re-open the room should the opposition request it.
e. The host must allow a minimum of 10 minutes after the scheduled/agreed time for players to join the room, unless consent from the opposition is given to resume.
f. The host must start the GP promptly after 10 minutes has passed from the time of opening the room, or 10 minutes after the scheduled/agreed time, unless consent from the opposing team has been given to wait longer.
g. The host must wait a minimum of 1 minute and a maximum of 3 minutes between GPs, unless consent from the opposition has been given to resume or wait longer.
h. Should two or more teams report excessive lag from a particular hosting player, then the hosting player may be prevented from hosting.
i. Should disconnections be frequent with a particular hosting player, then the hosting player may be prevented from hosting.

VI. Incomplete Wars

a. Should staff agree that a team had an acceptable reason for not completing a war, then any outstanding GP(s)/race(s) are to be played at a mutually agreed date/time. Should both teams fail to reach an agreement, then they are to play at a date/time set by staff.
b. Should staff be of the opinion that a team were unwilling to complete a war without good reason, then any scores for any completed GP(s)/race(s) that are presented may be counted as the final war result, or the team who were unwilling to complete the war may lose that war by forfeit.

VII. Rescheduling and Replays

a. Wars are to take place at scheduled date/time, unless both teams are in agreement to play at a different date/time which permits them to post results no later than Monday 23:59 UTC after the scheduled weekend.
b. Should a scheduled war coincide with a countries national or religious holiday, then both teams are to play at a mutually agreed date/time which permits them to post results no later than Monday 23:59 UTC after the following weekend. Should both teams fail to reach an agreement, then they are to play at a date/time set by staff which permits the teams to post the result no later than Monday 23:59 UTC after the following weekend.
c. Teams must honour the agreed upon date/time or staff set date/time for reschedules, replays or for the completion of any outstanding GP(s)/race(s).
d. Should teams fail to honour the agreed upon date/time or staff set date/time for reschedules, replays or for the completion of any outstanding GP(s)/race(s), then any scores for any completed GP(s)/race(s) that are presented may be counted as the final war result.
e. Teams must post their rescheduled war results and/or outstanding GP/race results no later than Monday 23:59 UTC after the scheduled weekend.
f. Teams who are unable to war on the scheduled date/time twice or more during a season may be disqualified or replaced for the following season.

VIII. Results

a. The host team must post the war result no later than Monday 23:59 UTC after the scheduled weekend.
b. Teams must not withhold proof of scores from the hosting team should they require it.
c. If neither team can provide proof of a result, then proof of any completed races may be counted as the final result.
d. If there is no proof of a result but evidence is presented supporting the outcome instead, then that war may be scored as a forfeit.
e. If there is no proof of a result and no evidence to support the outcome of a result, then that war may be scored as a draw.

IX. Forfeits

a. Forfeits are scored as 100-0.
b. Teams who forfeit twice in a season may be disqualified or replaced for the following season.
c. A war between two disqualified or withdrawn teams will be scored as 100-100.

X. Disqualifications

a. Any previous results for disqualified or withdrawn teams may be altered to forfeit defeats.
b. Any previous results for disqualified or withdrawn teams against disqualified or withdrawn teams may be altered to 100-100.
c. Any individuals for players of disqualified or withdrawn teams will be removed.

XI. Cheating

a. Players must not use any form of hacking or other exploitation which may be considered to be an advantage over their opponent.
b. Teams must not use any banned or suspended players, or banned players that are using any form of hacking or other exploitation which may be considered to be an advantage over their opponent.
c. Players may be required to abide by conditional participation rules should they have a reasonable accusation made against them and/or be widely suspected of cheating
d. Players who are accused of breaking rules 16.a or 16.b may be required to abide by conditional participation rules.

XII. Lagging

a. Players must not intentionally lag.
b. Players points may be discounted should it be reported that they were lagging to an extent where it was at a disadvantage to the opponent and/or at an advantage to the player.
c. Players race points may be corrected to their true values should adequate proof of those true values be presented.
Note: For any lag penalty to be implemented, you must show recordings from 2 or more perspectives.

XIII. Texture hacks, model hacks & custom tracks

a. Players must not use any course or ,item texture hacks, model hacks, or custom tracks or any other game modification(s) that may be considered to be an unfair advantage.

XIV. ISO's
a. One can not use an ISO that is foreign to their region. If one is caught using a foreign ISO, they will incur a 30 point penalty.

XV. Conditional participation

a. Streaming or recording startup can be done with a handheld camera and must show footage until the room starts without disconnections. Streaming can also be done with a capture card but the entire gameplay must be included with it.
b. If opponents request it, conditional players must record or stream the restarting of their Wii twice while showing the SD Card slot empty on the Wii.
b.i. After the restarts, the recording/stream must be including the Wii menu, disc channel, game loading sequence, and themselves joining the room in one unedited sequence. This must be done before the commencement of any room and upon joining a room following a disconnection unless the opponent does not require it.
b.ii. Conditional players can also make a mii by request to prove that the stream is not pre-recorded when streaming start-up with a capture card. If said player does so, they will not need to stream/record the entire gameplay.
c. Should players use any non-official/3rd party disc loader that requires the use of their SD Card, they must do one of the following in order to fulfill their requirements for conditional participation. (Opponents can choose which one)
c.i. Said players may record and/or stream with their hand-held camera the loading of their non-official/3rd party disc loader with the SD Card slot full in the Wii. Once done, they can show the removal of the SD Card and then show any options for ocarina set as OFF. They must then proceed with the rest of the normal recording/streaming rules all the way up until they join the room and when the room begins.
c.ii. Said players may record and/or stream with their camera the loading of their non-official/3rd party disc loaders with the Ocarina option set to ON. Afterwards, an error message of some sort should come up saying that codes were not found on the SD card and should proceed normally with the rest of the rules of conditional participation applying up until they join the room and the room begins.
d. Concerning USB Loader GX mainly for conditionnal:

1. Starting the USB Loader GX
2. Go to the game boot screen
3. Go to Game Settings (STEP 1)
4. Go to Load Settings (STEP 2)
5. Turn Ocarina ON (STEP 3)
6. Press SAVE (STEP 4)
7. Press OK (STEP 5)
8. Press BACK (STEP 6)
9. Press BACK again (STEP 7)
10. Start game (STEP
11. Press CONTINUE (FINAL STEP!)

Step by Step: *here*

Note: This being streamed, it's highly suggested to ask the user to do something random (such as moving the cursor to some points or going to a random menu) to check it isn't a video pre-recorded since software like XSplit allows to stream video.
e. Players on conditional participation must, at the very least, ask the opposition whether they care to see the conditional or not.
f. Players must record, upload and share links to their entire game play within the result thread no later than 72hrs after a wars completion and keep their videos uploaded for a minimum of 2 weeks, unless proof is presented to support that rules a. / b. / c. were followed.

XVI. Trolling

Visit here for more information.

Any of the above rules broken without a penalty described with them will have a penalty decided on by the appropriate party (division admin, adviser group etc.)
Also, it's up to the Division Admin how the rules are used.
Conditionalerrors, penaltys and other stuff like this have a deadline of 72 hours after the war got played.