I know the B.O.C. is going to get tired of me asking all these questions, but......... I was readin something about catchin Blues where the author kept talking about finding fish at the thermocline. Now as I understand it the thermocline is the depth in the water where the temperature changes abruptly. Well...... #1. Doesn't the water temperature depend on the temperature outside?. it just takes longer for deeper water to be heated up or cooled down by the outside air temp. So it seems like the thermocline would be changing all year long, getting deeper or more shallow as the seasons changed. The only way to find the thermocline is to hang a thermometer from a string and lower it overboard then check the temp at different water depth until you find an abrupt change. Well.. not being naturally inclined to do all this extra work, I checked my fish finder to find out if it had a thermocline button, it didn't. Since I had no intention of spending my day off measuring water temperatures. I started looking for bait fish (shad)on the sonar, and then fished a couple feet below the shad for Blues. Anybody have any thoughts about this thermocline idea? Any experience etc.