If you want to get some good info. join the QDMA, and get the book "Grow'em Right" by Neal Dougherty. Both of these things will get you started in the right direction. Seems to me like it will be tough to convine 8-12 people, and it seems to me like that is an awfully high number of people hunting 80 acres, or do they also hunt the public land?

As for convincing them you may want to order the video "Let Him Go So He Can Grow" I haven't personally seen it, but from reading the description it looks like it covers the fine points of QDM. Good Luck!