good color on any smallmouth lake when it's cold....
IMO
a big smallie has a very small window when it's cold and is less likely to "move" for schooling bait.
they'd rather move for 1 substancial meal than pick off baitfish from a school.
late fall when the perch push back up, they'll stay in 5-15 fow until after the spawn, which makes them a "key" bait for big smallies.
look for them to slide up in the shallows
right after ice out during warming trends.
just my $1.380.......bitches