I would not get less than a 24 volt trolling motor on a 19' boat. Any wind or current will overpower a 12 v. motor.
Agreed. I run a 12V on mine, and it works OK. I run with the current and wind, because its easier and because I have to
I have a hand control, but I'd really rather have a foot control, but I guess you can't beat free. Here's a pic-
If you decide to mount at this location and go with a 24V, you may want to add some structure to the area. I get some flex at the gunwale with the thrust from the 12V