the amargosa dunes are the best. nobody goes there so you usually have the whole place to yourself plus its free. thats where i go 90% of the time. had an accident there on my quad where i drove off a dune (not a razor) going 40+ then nose dived into another dune . bent my whole front end and bent my bars with my knees....i dont know how i got out of that one without any broken bones.i sure was hurting for the next couple weeks tho . fun part was getting my quad back to my truck. never ride alone. as for the dirt bike i never broke anything but it was getting ridiculous how manny times i was getting hurt on it. i guess im paranoid now but i will never give the off road life up. im still wondering why i got the crotch rocket (its way more dangerous IMHO) id say get a quad, they go fast enough to get the adrenaline pumping