Some things I have found helps on Group hunting events. No Prizes, No Fee's, Event name needs to be non commercial. Event size is also an Issue. Camping on un Improved BLM is Free. Calling the event A Predator camp out will minimize the Local BLM interest. Invite the Hunters in the local USFS/BLM to join in to your Group Camp. Paid advertising in Public available Media turns a group camp out into a Commercial Event. Avoid it.