Here's the rig our quail guides use, little fancy (boxes and truck bed Aluminum) but you could do the same thing or use steel to make it. Instead of tie downs for the Ranger he has a bar in front and a pivot one on the back that wedges the UTV in place on the trailer, you can see the post for the back one above the tail light.
That's like 50-Gs in dog boxes there...
... Having hog dogs in a rig like that is like wearing camo when you go hunting.
That's why he welds his own LOTS cheaper that way
. About that rig total (not counting truck, trailer and Ranger, just the boxes for all three) would be about $25-32,000. I don't like the quail rig he has on the truck (too high) but the one on the car hauler in light steel would be SAWEETTT!!! I know some hog hunters down here use older model trucks with the orginal steel quail rigs on the back (flat bed with four boxes level on each side, seat on top of them like Brute's) and like them for hauling everything.