From your pictures it appears to be a hard chine hull. Why a hard chine? You only want a hard chine if you want the hull to plane. Otherwise you want a parabolic transverse cross sectional area which would mean less wetted surface per amount of volume. Less wetted surface area of course means less drag.
Wetted surface area at lower speeds is the significant amount of resistance. As you start going faster, your wave making resistance increases as a factor in your overall drag.
Another factor will be waves. Its rare when there are no waves. You must tank test with waves for your tests to reflect reality.
Given you have waves, your boat will need a realistic moment of inertia. Moment of inertia comes from the amount of mass you have away or towards your center of buoyancy. Placing a big weight at the center of buoyancy (LCB) to simulate true displacement
is not going to be realistic. On real boats you typically have engines aft of the center of buoyancy and anchor
chain and rode
well forward of the boats center of buoyancy. The higher the moment of inertia that you have the deeper your bow will pitch
into waves. You will need a realistic moment of inertia to reflect reality. You will need two weights, one placed aft and the other placed forward of the center of buoyancy to reflect the true moment of inertia of your model. The distance of the weights from the LCB is something that you are going to have to calculate.
I hate to say this, but I think your model will go faster backwards. If you look at a symmetrical foil and even most fish
, the maximum cord width is about 1/3 the distance from the leading edge. I think you have it backwards where your maximum cord with appears to be at 2/3 the distance from the leading edge. You don't want your laminar flow breaking up with a foil that closes up too fast. I would reverse this and see what happens. You will probably want your vertical cross section to go by this 1/3 rule
as well. Water does not compress so it must accelerate around the hull....one reason we get wake...it wants to go vertical some in order to equalize pressure as well when it accelerates around backwards around the hull.