My son found a video of an engineer that put a gear assembly in the handlebar riser of a bike, such that the bike steered the exact opposite of the way you turned the handlebars. Adults were NOT capable of riding that bike! Their muscle memory was too entrenched and they steered out of balance every time. (I found that very enlightening as regards old dogs like me and new tricks.)
My real point: I have never used any of the trolling motors where you can program a path based on GPS waypoints. However, if you are going to replace a trolling motor in the future, might it be worth the additional cost if that would give you a self-driving boat while your worked in the back?
