My fantasy is to buy an old UH-1 and fly way back in the mountains. The USFS Ranger would see you flying by but would be unable to follow you. You could dredge all day and fly out and as noisy as the UH-1's are you'd be untouchable as long as you don't go to the same area twice (USFS would get wise and have a helicopter ready if you came back again). You can fit an awful lot of gear in one of them and they can carry alot of weight.