I kinda like your concept because the additional money for each deer would really force the members to think before pulling the trigger. However, I think you risk having very few deer killed and be unable to pay the lease. Lastly, I don't like the fact that a doe costs the same as a 3.5 year old buck. If someone wants a deer for meat, you should encourage them to take a doe for that instead of a 3.5 year old buck.