Several months ago Old Town put out a 12' and 13' fishing kayak with a Minn Kota Spot Lock 45lb trolling motor. The reviews were, and still appear pretty positive. Going to the Minn Kota site, it looks like they have a number of trolling motors with the Spot Lock technology ranging from $$$$-$.
I think it is going to come down to how you want to mount a trolling motor to your PA. There are options to mounting a trolling motor outside the hull. If you want a cassette mounted one you will have to work for it.
For outside the hull, I know that there have been some positive experiments with putting a PA 17' trolling motor mount onto a 14' PA. Again, a little DYI is needed to actually mount it. Then it just comes down to putting the motor/battery on board and balancing the boat. Weight is going to be a concern though. A lithium battery would help, again $$.
Island Hopper in Florida puts out a 45lb cassette mounted motor with a 360 drive cassette (about $1,000). Not sure if they will help you to put a Minn Kota Spot Lock into their cassette or if they will sell the cassette only so you can try to mount the Minn Kota.
If your a DYI type you can probably make a 360 cassette plug and try to find a way to put a Minn Kota Spot Lock into it. It will mean moving their technology around a bit.
That's about all I got this morning on this topic.
Good luck!
https://www.onthewater.com/old-town-bri ... ak-fishinghttps://minnkotamotors.johnsonoutdoors. ... res%3A6986