Originally Posted by SIBRider
I'm not arguing whether there is a hook or not and how that affects performance. There is a stated concern that motor doesn't perform at correct trim angle. This problem is counteracted by position motor in manner that greatly exacerbates any possible hull problems. In fact it probably has far greater effect. Once good propulsion is established only after that I would be concerned with other issues. Motor that doesn't perform will not be able to raise bow. Hence it's pointless to fight other battles before this one is won.
There's nothing that drastically wrong with the OP's prop. Even if its sized pretty far off the correct size, changing to a 4 blade or changing the pitch 2" is not the issue here. Those are minor tweeks to a major problem.
There are 2 possible sources to projectile's problem:
1) the shaft length on the engine is too short or its mounted way too high. Hence the only way to put the prop in the water is to trim it all the way down.
2) there's a huge cup in the hull.
Or both simultaneously.
I'd like to know the shaft length and see the motor mounted on the transom to rule out #1