[jimmythegreek]

any of the decent humminbirds that have dual beam plus will show thermoclines if you turn the sensitivity all the way up. The newer ones have switchfire and u just turn that on and it shows. I have a 595color GPS at the helm that is 20 degree only (3yrs old) and I can see it decent on that with it on 10 sensitivtity. My older one a 565 black&white showed it too that was dual 20/60 degree cones. My new one (1 mo old) is a 998 SI/DI w dual beam and switchfire and I can see it w just 5 outta 10 on normal mode. I fished aeroflex 3 weeks ago and there was a solid thermocline lakewide at 21 feet about 3 feet thick. sun morning I hit it at 5am til almost noon and there wasnt anything solid, there was only a sparse band from 35-30 feet but not a true thermocline even over 100ft deep water. I think some of these lakes fluctuate because of rain water that leeches in, I couldnt understand how the thermocline disappeared in the lake, maybe it turned over somehow? I was gonna fish for some trout but couldnt mark anything rly deep i didnt see a single fish past 25 feet all day even on side imaging. I also saw the post on here from the 110 trout caught at nite in RV and they said they anchored in 60-70ft and fished 45 feet deep. I would think the thermocline there would be 30ft or less but maybe there isnt one w all the springs there at the left of the boat launch in laker alley? idk Id love to know how that thermocline works and how it sets up. Its the key to catching summer trout....