The biggest enemy to boat control, and I speak for myself especially, is laziness. You're going down the lake on a bluebird sunny day and see a 45-degree chunk rock bank fully shaded with a 15-mph wind blowing on it. You decide to fish it, so you pick a starting spot and as you get closer you notice the wind is blowing more down the bank rather than into it. Now, the correct thing to do would be turn around, get bank on plane and run down to what would have been your original stopping point and fish back up the bank into the wind.
That's where your mind starts saying, "Aw heck, it'd be a lot easier just to let the wind blow me along. Wouldn't have to stand on the troller near as much and sure wouldn't have to cast into the wind. Yeah, let's just do that."
So now you've created several problems for yourself. You are at the mercy of the wind with boat speed, unless you want to throw your troller around backward and prop-wash what you're trying to fish. Whenever you get to a key spot along that bank, you're gonna go blowing by it way too fast to fish it properly. You're gonna have to adjust your reeling speed to compensate for the boat speed since the wind is blowing you down the bank. And on and on.
Guys, I do it, too. But the more we pay attention to details and put forth the effort to do things the way we KNOW we should, the more bites we get.