18.5 outboard shaft length

Jun 18, 2020
1
Hunter 18.5 Pymatuning
I just got a Hunter 18.5 and need to pickup an outboard motor. Do you know what shaft length I need? 15" or 20"
Thanks
 
Jul 23, 2019
100
Hunter 18.5 Revelstoke
20” .... my 15” on a Hunter 18.5 pops out of the water in small waves and cavitates.