If you aren’t needing it to read at running speed, mount it high enough on the transom that it won’t be in the water when running. I wouldn’t worry about affecting water flow to the motor unless you plan to mount it right in front of the motor. I have my 2D ducer glassed in, but my down/side scan one is on the transom off to one side, above the water at running speed. No issues. You can also mount it under the step on the bottom of the hull if there is enough room.

Inactive
Portage, WI
Posts: 3309