Trim tabs too big?

[spareparts]

make sure you don't mount them flush with the bottom, raise them up about 1/2 inch at the transom and make sure the tabs will retract at least another 1 above horizontal when in the upright position. That much tab can drag a boat down speed wise. You could probably sell them and buy a set of 8X12 bennetts and have some cash left over(I don't care for lencos)