Home Depot et al also rent pickup trucks by the hour (something like $20) and they're quite capable and nobody checks the paint.
As long as you bring it back and it's not on fire they're unlikely to care.
You can even optimize by buying your own trailer so you can load and unload at your convenience, and only rent the truck to move the trailer - and trailers (even enclosed ones or dump ones) are significantly cheaper than trucks, and really only need tires as maintenance.
I damaged a U-haul once and it was fine, it was all covered.
We rented a U-haul this year and hauled about 2000lbs of stuff to the dump with it in one trip.