Think of positioning yourself to drop your jig inside the opening of a 5 gallon bucket. That's my more open water structure waypoint approach. Always approaching from a downwind position as stated above. If not possible, I set up my trolling motor so it doesn't blow thrust into the structure and use longer jig poles, easing by the waypoint. If I catch a fish I drift it again. Now when I'm fishing structure tight to the bank the presentation precision increases to the mouth of a mayonnaise jar. Usually if any "Flow" is present I find the fish will orient themselves in front or behind the structure depending of velocity of flow. My waypoints for this type of fishing are saved when I'm right over the top looking at the structure on 2D sonar with a trolling motor transducer, and no movement at all for a couple of minutes before hitting the mark button. Needless to say, have your spot fished out first.