Uhaul car trailers are about 10x heavier than they should be, and their safety margins are substantial. I'd call ahead with the plan and see if they will even rent to you.
A car dolly cuts down on weight, but you end up with 0 tongue weight. Flat towing is a lot different than a trailer. Every time you touch the brakes you basically have another vehicle trying to push you off the road. I used to flat tow a samurai with a heavy 4door f150, not bad. I did the same twice with my GC, sucked.
I'm the only gay eskimo.