The boat is a malibu sunsetter, but in general, how high are your bunks so the center keel doesnt hit the cross member?? I have it so the 2x6 will be 21" apart inside to inside (exactly what the main bunks are on the trailer). The picture is just a 2x4 clamped to the top of the bracket for visual referrence. Its angled at approximately what the bunks are on the trailer, I used a sliding t bevel and "copied" the angle of the trailer bunks. Thanks in advance for any input