Agree with earlier post about using airfields as turning points for competetions etc, having to pick your way through gliders on final approach is an unnecessary danger, especially as most are so invisible unless they catach the sun. It is crass to say that Glider pilots are too busy to do radio because they can be travelling at 120kt. Big deal, what about single pilot IFR, they manage to find time to talk.
Perhaps he best answer is to ban gliding?