Has anyone ever considered putting together a group of people to buy land for a private mtb area? Not open to the public, so unless someone was going to sue himself or herself, you shouldn't have a problem there. For instance, I saw 309 acres in Maine listed for $450k. With enough of a group (say, enough to actually build trails) the price wouldn't be too bad. $450k divided by 20 people comes out to $22,500. So maybe $30k by the time you factor in all of the work you'd need to do or get done. Of course, there may be better/cheaper places than Maine for something like this. Just a thought.