First time boater with an easy (hopefuly) question. I have an '81 sea-ray open bow with a merc 120/alpha one drive. I want to put a trolling/back-up motor on the boat. There is an existing bracket for the motor. I am thinking about a Tohatsu 9.8. Need to figure out the shaft length. I have measured from the top of the mounting bracket (no adjustment option) to the water line and that is 12". Is this enough to determine the shaft length or do I need more measurements?
Thanks!
Thanks!