I've been a slider fan for decades. Other than my dad, nobody has taught me more about jig fishing than the late, great Charlie Brewer.
For crappie fishing, I use the spider slider head if I'm fishing really snaggy areas. Other times, I use a non-weedless head.
If you want to try a straight-tail bait, just buy some of the Brewer 4" worms and cut them down to whatever size you want.
4" Slider Fishing Worms Finesse Do-Nothing
I also highly recommend Charlie's book. IMO, it's the best book ever on jig fishing.
Charlie Brewer Sr. on Slider Fishn'