Well that's something I would vote for. Don't shoot registered anymore at my age I find it too many and more scores drop off on the last 50. If my local grounds offered 50 then I would shoot them.Just a thought, if cost is an issue, if registered comps were 50 instead of 100 would more people shoot.
I shoot trap and I don't see a problem running a 50 bird comp alongside the standard 100 bird comp.