Whatever truck you tow with, tow with the boats fuel tank empty if going any distance.
I used to tow my 2320 Parker to Cape Cod from time to time with my Ford Super Duty F350.
Night & day difference towing & stopping with or without fuel in the boats tank.
The truck has little to do with stopping if you equip the trailer properly. Most people overlook the importance of trailer brakes that actually work.
as to the manufacturer comment. "Individual results will vary"
For a mile drive, the ability to accelerate with traffic and fuel economy considerations are null and void. That leaves stopping. If brakes are good or it's flat ground with little traffic, there isn't much to be worried about.
Be mindful of the load weighing more than the vehicle. This, from my experience, is a key turning point in the feel of the tow.
I tow equipment and trailers as part of my commercial operations. With a late model F250 (srw v8), as long as I'm not dealing with highways or significant hills, I can pull 12k+, but it requires extra attention. Anything up to about 4k I don't have to think much about..
You can pull that with anything on a truck chassis. Full-size SUV would do it... I've got a 4runner which I wouldn't want to climb hills with, but a 30mph jaunt down the road is no problem.
I would favor something with 4wd - definitely. Slick ramps are trouble.
Can your truck tow the load, get it rolling down the road? Probably, with no great problem. Can your truck stop the trailer with that load, from whatever speed you're driving? That's the more important question. If your stopping distance doubles you've got to adjust your driving habits. Can your truck control the load in all maneuvers?
The aspect which nobody has mentioned is legality. Each and every truck has towing and weight specs published by the manufacturer. If you're towing a load outside those specs, and you have an accident of any sort, you're dead in the water. The accident will automatically be deemed your fault. Things will go downhill from there very quickly. It won't matter what you've done to upgrade your truck's ability to handle the load, the police and the courts will say, "It's a C1500, it's registered as a C1500, and you're overloaded for a C1500." Consider the liability of the matter. Will your insurance company cover you in the event of an accident with an overloaded and illegal truck? Chances are they'll say, "I'm sorry, sir, but you were towing an illegal load, outside the published limitations. We won't cover you when you're illegal."
So, know what you can legally tow, know what the weight distributions must be, and then be sure that all systems on the truck are mechanically up to the job.