05 noticstar 230 deck boat i/o 5.0 merc. When the boat is forward on the trailer with bow and bow hook against the trailer bow rollers and the wench is tight in a horizonal line but the boat bow is on about a 45 deg angle to the trailer bow rollers so when I hit a bump in the road the boat can bounce up (off the trailer bow rollers) because the trailer frame flexes from the front cross member forward. This means the the boat bow is pounding on the trailer bow rollers at road bumps. should the boat bow be tied verticily to the trailer making the boat and trailer a unitized unit? Im concerned about the flexing of the trailer frame developing fatige cracks but I dont see any other people with boat tied to frame. thank for any in put.