MOST BLMs, I believe, have a limit of 2 weeks at a time. Usually you only have to move 25 miles to another spot to be okay. Exception is around Quartzsite, Arizona. In Q, you can pay $180 (?) for 7 months. If I'm not right, others will let us know. We HAVE had our alcohol while on BLM land. Picking the right spot would involve looking at their maps (online) to see if it's okay, looking at the ground (is it muddy and bad, is it a wash -- something you look at in AZ).....but as for leaving your rig for eternity, I doubt you can do that. :)