all shooters are different. that's why we all have different types of guns and ammo we use. a coach that wants all shooters to have the same weapon systems is not allowing his students to use their full potential.
My guess is that the coach is concerned about teaching the new shooters to look at and concentrate on the target and not look at the sights and try to aim the shotgun like a rifle. That can be a very difficult concept to teach especially if the new shooter is used to shooting a rifle at stationary targets and using the rifle sights to aim.
I cannot shoot with both eyes open without a fiberoptic front sight that occludes vision of the bead to the non-shooting eye. Like the Uni-Dot.
To me that coach sounds like an ignorant jackass making blanket statements like that, because he obviously does not take things like the above into consideration. Find another coach who will HELP you and WORK with you, not try to make you fit to HIS preconceived biased opinion of how you should shoot.
Sounds like someone needs a new coach. The bead is a reference point and that's all. The target is the front sight and the eye is the rear sight. Head DOWN and Target,Target,Target. That's what breaks birds.
I had a fiber optic front bead. I never thought it really gained anything. I was in an evening League in Texas where the sun was directly behind the shooters. That fiber really did it's job. It was like a bright red flare on the end of the barrel. The only problem was that it was brighter than the target. The bright sight made it difficult to find the target. I unscrewed it and put it in my pocket. Ended up shooting way better with no front bead at all.
I think Tim Earney has it right, but I do not like the coach banning them. It would be best IMO if they used words like "strongly discourage" and for "this reason" but to say no one is allowed is a bit harsh.
My son has been shooting there for several years, he shoots registered targets and got his first ticket punched at the last shoot. I really hope the coach does not try and enforce this on him.
Sort of a silly battle to fight. Maybe the guy is thinking that kids should learn to shoot with a white bead without becoming dependent upon a neon bead, but I still think this is s non-issue. Martinpicker