A while back I sold my 19 ft Searay Seville and got a 26 ft Wellcraft. At the time I was the proud owner of a 97 F-150 4x4. Towing the Searay was a breeze, it was a preaty lite boat, but when I hooked up to the Wellcraft, man, I would be goin down the road and that boat would start makin that Ford go from side to side so bad I would have to get on the brakes. Best I could do was about 60 (without gettin the little women stirred up). Now, with the CTD I have'nt come close to being uncomfortable with the boat on. But I don't go over 65 (unless I'm close to a Ford with a load on) cause that stirs up the little woman up too.