I think that each club should handle its own sign ups. I dont think it is the responsibility of ASC to police every aspect of airsoft.
My suggestion is using temporary bans. I know BCAC had an issue with people signing up for bootcamps and then bailing out without word. This resulted in bootcamps being cancelled and people who travelled long distances to be left hanging. They issued temporary bans and bootcamp attendance picked up.
Depending on the clubs descression, they should require that no one signup before they are 100% confirmed. Once you sign up, if you bail out, you would not be permitted to signup for X number of games.
I think that is a little less complicated.
< Catbert > bahahah you cooked your deagle?!?!?
< KaneLupis > engine anodized chrome paint
< KaneLupis > designed to set a high temps
< KaneLupis > so, oven seemed logical