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  1. Aug 21, 2023 · Gel Coat Cracks: Many owners report problems with the gel coat as a result of the flexing of the hull and it being such thin fiberglass. The flexing of the boat is worse when in rough water, which causes deeper cracks in the gel coat or more significant problems with the fiberglass.

  2. Aug 1, 2018 · Yes, some do flex, so much so that I have heard more than one rigger tell me they tune the rig by the interior doors, they tighten it until the doors jam and back off a little, they don’t get the tension they want, hull flex prevents that. These are the boats that you don’t bother with a driveshaft alignment until it’s in the water.

  3. Nov 22, 2009 · If something is shaking it's likely the hull bottom is 'Oil-Canning.' Turn the boat over and press on the hull bottom. There should be no flexing. Press on each side of the hull under the tub.

  4. The bottom line is that whether a hull is successfully flexible or rigid is dependent on design and function. In a high speed vessel, everything else about a hull can be flexible, but the foundation of the drive system must be absolutely rigid.

  5. Aug 21, 2011 · Try putting the boat on a trailer or lift and pushing on the hull from the bottom to see if there are any obvious soft spots. If you're able to see the hull bottom while underway, maybe through a ski locker (underfloor storage) you can look for problems there.

  6. Jul 18, 2018 · You want a Smooth hull and Slow water flow along the hull, when you are in your ideal Heel for your boat. The minute you introduce Hull Turbulence you are increasing drag, as long is it water to hull and not air to hull.

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  8. May 27, 2010 · When the line of the shaft has been accurately determined by using a taut string, the points should be marked on the uprights "D", "E", "F", etc. Place the jig back in to the boat and find the shaft hole center by laying a straight-edge along the marks.