Some early spring flies that will catch all species of freshwater fish are jigs made with strips of rabbit fur. You can make these cheap by buying some jig hooks or by buying the little 1/80 size jigs from someone who makes them. You also can buy the 1/32 jigs off the shelf anywhere crappie jigs are sold but the 1/32 are kinda difficult to cast on a 3 or 4 weight rod. I make them using the metal beads from Hobby Lobby and the rabbit pelts they sell there.
I made this little device for cutting my rabbit fur as buying the full pelt and cutting your own saves a ton of money if you're a poor boy like me.
I generally tie on some flash to extend beyond the rabbit fur at the tail; then put some super glue on the hook shank after wrapping it with thread to hold the glue, and wrap the rabbit fur forward stroking the fur rearward as I wrap. Wetting the rabbit fur with a little saliva helps keep the fibers under control.
I generally just cast, let the fly sink to the desired depth, then swim it back. You can also fish them under a strike indicator and let the waves put action on the fly. I tried to dye some green but it didn't work so black, white, gray are about all the colors available at Hobby Lobby. I dyed some red and they turned out pink. White bass, yellow bass, crappie, black bass, and all species of brim love the rabbit jigs. I even caught some stocker trout at LMF and in the winter ponds here in East Texas. Cheap to make and easy to fish. Make you some.-p-