Minnkota used to make one that had infinite speed control on it. A friend I fished with had it on his pond boat and it worked really well. I tried to find one a few years ago with no luck. I think they stopped making them when they came out with the Maximizer motors which had basically this same speed control built into the unit. There may be some aftermarket ones available now, I have not checked recently. Got an IPilot and it has almost infinite speed control on it.