I agree some what with what you are saying but ive caught alot of LM when water temps are only in the mid 50's r so. for example I was on goose lake in the early spring I boated approx 30 Lm. and far as other species of fish some really turn on when water temps cool down, example sauger,walleye,Sm,bluecat, etc. I caught some big bluecats in the dead winter on the ohio river.for example my son and I was fishing the ohio river on a January day water temps were in the 40,s we boated several BC the two biggest WT 43&58 pds. it can be done just my opion
