For me, having my LS transducer on my TM shaft, "boat control" is 90% of the equation. My boat drifts easily, in almost no wind, so I try and approach an area from downwind as often as possible. Scanning out to 40-60ft I look to find cover, structure, baitfish schools, and schools of fish. Any "new" cover found is punched in on my Hook 7, which is set on map of the lake. As my target gets within range (40ft out) I'll take my foot off the TM and slow my approach ... flipping my jigs to the target area once it is in the 20-25ft range. I'll bump the TM only if needed to stay at that distance, otherwise turning the TM (as needed) to keep the target in the middle of the LS ping while NOT stepping on the "go" button, unless needed to correct my position or distance.
(I have a 5spd 12v 43# thrust MotorGuide)
Which reminds me ... I need to tighten the adjustment screw on my foot pedal, as it swings too easily to one side.
All in all, "boat control" is simply getting & keeping the boat in a position that's within casting range of your target.