Here's a link to an older post where a fella did exactly what you are describing. (scroll to the bottom of the post to see the pictures.) Make no mistake...I LOVE THIS IDEA!!!
Couple of things: The motor shaft really needs a hair cut. Also, notice how he has it mounted. It's difficult for me to tell but it looks like he bolted the quick release base to a piece of wood which was drilled right through the front lift handle.
Of all the motor options out there this is the one I would invest in. I love the idea of using the anchor lock feature in order to hold position over a school of crappie. I wouldn't have to worry about wind, current, or deploying an invasive anchor in the heat of the bite.
There's an aweful lot I like about this type of setup and I would cheer you on if you decide to implement this system in your PA.
You may want to consider asking Tom about this type of setup. I like the way that man thinks and engineers his designs. I don't know him personally, but I have enjoyed reading his posts and I think it would be worth your while to speak/PM with him.