I have to tow my 23-foot, 4,500-lb. sailboat (full keel) about 150 miles and I'm looking to rent a pick-up truck to do the job. Can't seem to find any places that will rent out a sufficiently powerful pick-up with a hitch (many don't want you to use your own trailor, I guess because of liability). There seem to be plenty of box trucks that can haul it, but I wonder whether the high aspect of an empty box truck is inherently less stable -- at least on a windy day -- than a pick-up truck. Hopefully, I'm being overcautious. Any thoughts, suggestions appreciated. Many thanks.