replacing/swapping out trolling motor (electric motor itself)?

[Ratherbfishing]

I know most if not all trolling motors are "sealed" at the shaft but that being said, I've got an old motor guide motor which has given up the ghost.  How easy or difficult would it be to swap out one motor with another?  Seems a shame to trash something if it can be repaired/replaced.

[WRB]

Look up The Trolling Motor Doctor. Nick is a TM specialist and can help you.

Tom