I am trying to dial in my prop sizing and would like to know how to measure and where to start ? The boat is a lowe fs185 deep vee aluminum with a 115 e-tec set in the very lowest setting.
Do I measure from the cav plate to the bottom of the keel? (I have read about 1 inch from bottom of boat.

It seem that you measure a bass rig differently?

Any suggestions would be great