I have a Stamas,26.5 (very heavy). With the outboards and brackets it comes to 30 feet. The trailer I have rocks up and down at the hitch and I really feel it in my F-150. How should the boat sit on the trailer ? It has twin 250's so she's back heavy. Some one mentioned to me that the trailer should be longer. It's 26 feet from hitch to end. Any ideas ?