I think a 50 /50 poker game is fun. Take a board and staple a full deck of cards out on it, face to you, and then you get five arrows. You shoot, and who ever gets the best poker hand wins. The only thing is getting everyone through, you can do two things
1. have everybody shoot it as the last target and record what everyone has and then announce a winner.
2. set up mini tournaments of 5-10 guys and let them shoot and split the prize for the club and the winner. I suppose you can do a number of things but this is what I came up with. I think it would be a good idea to have an extra deck of cards on hand incase one gets shot out.
Have fun
ALLAN