Pad height is a simple measurement, park on a level surface, put a flat edge against the bottom of the hull and raise or lower the trailer jack until the straight edge is level and trim your engine down until the prop shaft is level and measure between the flat edge and the center of the prop shaft. 3.5 inches + or – below pad is a good starting point, and you can move it up or down from there in 1/4″increments. Ive found Fury props do like to run a little lower than a Tempest or Trophy.Good luck.