I tow my Olson 29 Sailboat with my 04 R. 5000# with the standard hitch. I have a picture somewhere, will chase it down.
No Problem with the load, even up the 40 degree ramp, but short distances no no cooling modifications yet. I had a custom hitch built from a Cleveland PAP salvage hitch, that is extremely beefy, just haven't gotten around to installing it yet. I took him the salvage hitch and the removable OEM hitch and welder duplicated everything as far as angles, etc with a standard 2" receiver box on the bottom. Was planning on having it chromed before installation, I'm not in any hurry.
2500# Bass Boat should be no worries, mate . . .
Cary
LKMURKY
04 Slingshot