What turtle and Gabowman said! Plus, I concentrate on visible structure, mainy wood, rocks if they are prominent. Use depth finder to locate submerged structure and drops. Normally have four rigs, two with 1/32, 2 with 1/16, different color bodies, at least one with 3 inch body, only use one at at time! When one seems to work best, stick with it until they tell you they don't want it any more, then change, they will let you know. Also, starting to prefer 7 foot rods for most casting, 5 1/2 foot for up close to brush and dock shooting.
Don't outsmart your common sense!
Jack