Thermocline

[Crestliner2008]

I know it's a little late in the season to be asking this, but here goes anyway. I have a new Lowrance X-135 sonar. The literature that comes with this unit suggest that it is relative easy to locate the thermocline with this unit. However, all season I have been unsuccessful in being able to "see" it. I've tried increasing & decreasing the sensitivity, adjusting chart speed, etc.. What am I doing wrong? Is there a surefire way to adjust a capable sonar so that you can get to see the thermocline? BTW, I'm fishing a very clear, deep hill-land type reservoir about 15 mi. long and about 8 mi. wide. It has a lot of 100' foot water, but the aver. depth is probably closer to 25'. We fish for smallies and lakers there, sometimes over 60' - 80' (lakers). Just can't seem to define the thermocline? Other folks who troll for lakers and salmon almost exclusively say they can see it on their sonars(?). Are they fibbing?

[Jig Man]

I have had a bunch of depth finders and have been able to see the thermocline on all of them.  The thermocline will not always be there.  Right now I am fishing a windy lake and have been for the last week.  I haven't seen any thermocline on it.

If you really want to locate it, be sure you know what it looks like and spend a little time slow moving from shallow to deep.  You should be able to see it with the unit in auto unless you have a poor transducer installation.

If you don't know what it looks like check your manual or got to the Lowrance tutorial.

Good luck with your search.