1. Make sure your servo linkages run freely and stop and start where they should, especially check the carb linkage, make sure the servo is not pushing or pulling against the barrel stop screw. Doing this will prolong servo life and battery power.
2. When building your boat roughen up the
areas of the hull where you are going to fix mountings.
If you have an Epoxy boat, before painting it, go over the hull and deck with some wet & dry to help the paint key into the surface, and to make sure there is no release agent still there.