I used a dolly for about a year or so. Sure Saved the weight, but it also don't Back Up, more than 4-6 feet. got tired of disconnecting the rear driveshaft too. Better Safe than Sorry, per the transfercase.
Jason, do you remember Granny's rig on his trailer? He'd unload the Jeep, & had all the rigging set to erect his tent, on the trailer deck. That's Low cost, & light weight!
Or, just throw a tall camper shell, on your PU bed. 
