
Have a look at:
www.johnhorsey.co.uk/Lexus/lexus%20Team/int_rules.htm
Basically no fishing from an anchored boat, no trolling, rudders or leeboards, no fly longer than 25 mm, only one rod to be made up at a time, No more than 3 flies on a leader which shall not be longer than twice the length of the rod.
Rods shall not exceed 12 feet in length. Only casting down wind of the boat allowed; no boobies, weighted flies, dog nobblers, strike indicators, bungs, shooting heads, maggots, farting, burping, partaking of curries the night before, four letter words and other profanities.
Anglers shall behave in a civilised gentlemanly fashion and shall congratulate the other on the successful landing of a fish.
Each angler shall check on the other for adherance to these rules.