Farsidefan
Bumpyroad has the most important point, I towed like that for 3 years, my f250 with the 7.3 handled the 5ver and 17 foot Carolina skiff like a dream. I don't know what Utah laws are but if its legal I say go for it. In my three years towing triple I can't remember any real problems, the boat always just followed the Sunnybrook and was always there when we stopped, except in turns I never saw her back there till we stopped.
I would still be towing triple but for one stop by the Florida highway patrol, he had pulled up along side us coming back from camping and then eased on back and lit us up for the pull over. He didn't write a ticket and instead just said I can't tow like that and had the same boat as us and we spent 30 minutes talking boat.
Well the next day I called Florida DOT for an explanation and explained I had a commercial license with a triples endorsement and all, and after a back and forth he agreed I might be legal if I licensed my truck for 26,000 gvwr, painted my company name permanent on side of door, kept my drivers log on board and more. So I just kind of said no more Florida towing, too hard.
Then towing triple in Georgia one campout I was talking with a fellow camper about the triple towing and he was a lawyer and said it wasn't a good idea. He stated if ever I had a accident, my fault or not, a guy like him will attempt to take everything I had and more. So that was our last campout triple towing, wife towed the boat after that, worked okay, but a little more of a chore.
Anyway, sorry so long winded, but if Legal in your state go for it, if not good luck and stay off hwy 17 in mid Florida, I bet that FHP guy is still there. LOL
Keith