Forget about Iceman booking dime bettors...he wouldn't be able to sleep at night, win or lose. As far as $300 bettors go, you'll have to give them at least a $2000 to $2500 cap. With 5 players you're extending 10 to 15 dimes credit, at least, on a given day. I'd have to know these guys pretty good to give them that kind of a leash. Iceman has already explained that he feels a little inhibited about the collection part. I think it would adversely affect his gambling as well, by diverting energy and creating a distraction.
You put them on a tighter leash until you know they pay. Bookies have been doing this since the beginning of time.
And as far as effecting your gambling, trust me it helps. You have three guys down money and they're all chasing on the Browns +7 in the Sunday night game. Gee, who should I bet?
God I miss that.