I have had my DP zoomed in to 20 feet so I havent been seeing anything below that. 2 or 3 weeks ago the thermocline was trying to set up around 17 or 18 feet, hadnt even thought about it setting up below 20 feet so I have been fishing too far above them hence slowing down the bite for me some. Appreciate the post Gomer, hepled me figure sumpin out!!