I will see fish and pass that way again by following the gps track. What I like to see are clouds of bait with bigger signatures of fish mixed in. From day to day their happy depth may change a little but usually they tend like a given depth. The water I trolled in TN, I tried to stay between 10' and 17' and sometimes they would be in the deeper water today when they were in 11' a couple of days before for no apparent reason. Good luck with it, I had a ton of fun with it.
Creativity is just intelligence fooling around