jack plate on yamaha 150 and 20' center console fisherman

[tsubaki]

Everything is dependent on how/where the motor was mounted (so not to need to drill more holes).
The base (boat side) of the plate usually works out good if using the highest mounting holes position and adjusting the motor height at the motors bolt holes.
The (normal) 5 inches of travel, coupled with the amount of setback should allow you about 6 1/2 inches of gained height.
Mine is a little lower than normal, due to the fact I insisted on using most of the existing transom bolt holes when we changed from a 20" to a 25" transom.



This is the lowest position possible with mine, a little too deep for most circumstances, given the motor setback.
This may be for good maintaining a toehold in rough seas.