How beneath the bottom of my boat should I place the prop, it is a 16 ft.: dory with a widht of 43" ?

Question

This is a 16' dory that I plan on adding a motor well to. It is about 19" to the shear, and the width is 43". It is a doubleender, and very light. Let me know, as I have bought a very lightweight 2hp outboard for it . Thanks, Tim Brown

Answer 1

Perhaps the better question is how high is the top  of the engine mounting board.  Depending on the  motor,  short shaft 15" or long shaft 20" .  The cavitation plate, just above the propeller, should skim the top of the water at speed.

Answer 2

If you are building the well inside the boat to mount the motor,  the motor mounting board should be high enough for the cavitation plate to within + or - 1/2 inch of the bottom of the boat.