Most of the ones I've been in here in the north central part of Texas (Graham, Mineral Wells, Strawn, Rising Star, Abilene, Comanche, etc.) have a max of four members per team. Each persons entry is usually in the $20-30 range.
Most have been around a 24 hour hunt, you hunt whatever land you can get on. Some that I've been in limit the counties that you are allowed to hunt, others are open range. The Graham hunt used to have several teams travel way out in west Texas, maybe even driving 3,4, 5 hours, I guess the coyotes are so much better that they are worth driving that far for, which those teams usually did win, then they split the contest into east and west regions.
Most contests are based on a point system, coyotes bobcats and fox being worth different points. Some I've been in coyotes got you more points, some bobcats. Foxes usually don't get you very far in points.
The winnings sometimes are only split 1st and 2nd, some sometimes pay even up to 5th. Its usually decided upon at contests at the check in, # of entries, etc. There are also side pots, heavy coyote, cat, fox, etc that you can pay extra to enter.
The most common rules are teams can only call in one location(you can't split your team and go two different call spots), no baiting, no hunting from public roads, etc, and of course the state laws. The rules are usually agreed upon at check in to begin with. A while back we were in a contest were the guy running it didn't "specify" that all animals had to be called. A team brought in almost 40 coyotes that they shot off dead pits, dead pigs in pastures and all. It was chaos, and hurt the contest the next month. But its is going good again since the rules were cleared up. A polygraph is usually what keeps people honest, although your smaller contests they don't usually have one.
Contests are fun, the one at Graham is the biggest we've entered, the pot sometimes gets up to over 10,000 in it. 1st place there is around 2-3000 dollars I think, last year a team brought in 21-22 coyotes, usually in the 10-15 coyote range would give you a really good chance, but some bad weather nights you may get some money with as few as 5 or 6. It's tough to compete with some of those guys, but sometimes you get lucky, its worth taken a chance to play I guess. We always do!! Its fun seeing some other teams setups, hearing what they are doing and what works for different people. A lot like this board does!!