1.) Some fish move deep and some move into creeks in winter. Cra p shoot on that one depending on your lake.
(Site censored the word cra-p) lol
2.) Picts Below- Since you said "crappies", I presume you're from up north.
think about bigger fish, bigger baits and bigger line. I use 12lb braid
Red & white? Most jigs will work at one time or another.
I mainly like something with blue or shad pattern or Purple Passion
3.) Don't use bobber stops anymore - only vertical jig
I use to use those tiny red plastic kind that weave on to your line.
Also, if you are in clear water, consider braided line with a fluoro or mono leader. Good luck out there!
I use these jigs.