Originally Posted by
Greg Guimond
The transom angles were the same on every boat they built. The tabs that Keith put on that boat, while cool looking, are a complete misfit for that hull and the waters it ran in. Merc made a family of K-planes that are 12" long if I remember correctly. Find a used set and have a plug and play replacement. Now as to how your current tabs are mounted, I think there was a miscue there as well. Why on a fast, short hull would you mount the leading edge of the trim tab a full 1" above the hulls horizontal running surface? I would have thought 1/4" max.
The other thing to consider is the depth of the drive which effects leverage, what is that prop shaft depth on your 23?