Gillie said:
Quote:
Seacrafts run best with cav plate about an 1-1/2" above the hull bottom, additionally, Armstrong asks for 1" of rise for every foot of bracket setback...you do the math.
Finally, I'm with reelescape - ditch the foils. Use the the trim tabs for efficient planing and hull control.
Different props may help but I think the other three issues should be dialed in first. Good luck, and keep us posted.
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That 1.5" inches where Seacrafts do so well is for
transom mounted motors. For every foot of bracket,
add 1 inch to the 1.5" above the hull starting point. So for a 30" setback bracket, your starting point would be having the bottom of the cavitation plate 3.5" above the hull.
__________________
Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury