I think the hull extensions might be preferable at the lower speeds you mention as they'll lengthen the waterline and add buoyancy aft.
I tend to agree with you. However the stern-heavy boats can accomplish almost the same thing by trimming the engine, drive or tabs down, though...
My feeling is that you and your friend are right, but a boat in the water IS much more convenient and he and his partners will get more use out of...
In most circumstances I think the extra weight would just slow you down, but it MIGHT help under extremes. Adding a smaller amount of weight to...
The platform is just a platform... If it's low enough it might help at low speeds but lift out of the water at higher speeds. The practice of...