I don' t see how anyone can consider it cheating wether you use bright nocks/vanes or not. By shooter rotation we all get the chance to shoot first and last. Some feel they have a competitive edge with all dark, ok hope it works for you. Some like to reference off other arrows, that might work too. Others feel an errant bright arrow draws them off target, that could happen. The truth lies in the middle. Your focus while on the stake should be the one spot on the target you wish to hit. If you fail to do so, that responsibility is yours alone. If I manage to put a nice bright nock in the center of the 11 ring, on a dificult target, I' ll invite everyone shooting with me to center on that arrow and do their best. I don' t want to lose arrows but if you can hit that small of a target i' ll celebrate your shot with you.

Enjoy shooting, however you choose to do it. I hope your means of competition brings you success.