call it a hunt instead of a contest. Don't have a huge cash pay out as money makes people cheat. Instead, take all the money and buy tons of raffle prizes. That way, everyone comes out awinner. Shift the focus from winning a contest to having a predator get together for fun. To deter cheaters, you can use the block in the mouth method (ala vha rules). that means having a pre-hunt get together to give out the blocks, however.