Bracket Position

[dsherod]

I was looking at some of the "bracket" posts on the site and there's one thing that keeps bothering me. I consistently see the brackets, with respect to the hull is higher leaving about 5 inches from the riding surface of the hull to the riding surface of the bracket.

This, at planing speeds, will create a low pressure area below the bracket and forward of the motors causing the reverse of lift and driving the hull down in the water slightly. This can be overcome by running trim tabs down to bring the aft part of the hull up and the bow down, but at a penalty of increased drag.

It also destabilizes the laminar flow of water over the hull just prior to it entering the props which I can't imagine would have a positive performance result.

Since this is consistent with all of the bracket installations I have seen, I must be missing something. I know many of you have done the bracket thing. Can any of you explain why they are done this way?