Center of gravity and performance dynamics
Changing the keel can only compromise the sailing characteristics of your boat. By changing the center of gravity, the ability of the boat to handle heavier air is diminished. This also changes the chine of the hull so the boat won't sail as efficient as it's original design. There's a host of other problems which include the hydrodynamic drag coefficient, aerodynamic lift, yawl, pitch, and the ability of the hull and rigging to handle the new loads and changes in stress. If the water level is too low to slip your boat at your marina, I'd seek other marinas where the problem isn't as pronounced. Changing the design of your boats keel and/or keel configuration can be done but is most likely not your best option. It will also de-value your boat should you ever want to sell. Hope this helps. Gregg Brock
