Been cruising alot here recently looking for Big Blues but not finding that many on Sonar.
Getting some fish in Shallow water just anchoring and fishing blind.

When do they normally go deep?

when it gets really cold

They skipped it this year.

yep they sure did skip it this year. been in their fall pattern all "winter".

Dang, So now I have been hearing they are in the shallows, then as it warms up and begins to stay in the 70-85 degree range, do they stay shallow?

I fish a lot in south Tx. They never really moved too the deeper holes here... Drift fishing was and still is the best bet. Covering lots of water. Once I got a bite or picked up a couple they were usually all in that depth. Never caught anything deeper than 40ft.

in three weeks when it finally gets cold

They are and have been Scattered for 9 months. Fish everywhere.

I only caught fish in deep water one weekend this winter, the rest have been 4 to 30 ft.

i found a big fish in 10 ft of water broke my line 40 degrees and also I saw a big catfish in the shallow water at lake whitney december he just swam off and it plowed the water probably flathead