I hope it does what you need. I'm very late in this but i will say that the variable is a good option. When it's calm i couldn't turn my last motor low enough to make small corrections, and trolling speed was too fast so you were on and off the motor constantly. I fish a brushpile that is in an open area, but it holds big fish and it's worth the trouble. My smaller motor barely held it's own and if either of us stood up, it lost ground. The 70lb keeps me in place now and I don't go home as early as I did before. The 40lb on a previous boat wasn't big enough for the wind signature of the boat and I went home early a lot of days when the fish were biting. Just my experience, hope the new one does well.
Creativity is just intelligence fooling around