I usually let it sink to the bottom and slowly hop it or swim it back near the bottom. Sometimes the crappie are suspended off the bottom and you'll do better swimming it back if they're 4' down in 8' water. I use 4 or 6 lb hi vis line with a 1/16 head and a plastic thump buddy or other plastic. Plastic skips better than hand tied or maribou. Main thing is to work at it. Don't try it for 30 minutes and say, "man, I can't do this." Just work at it and you'll get it and eventually be rewarded nicely. Watch your line non stop b/c sometimes you only see the bite and don't feel it.
I don't live for the thump, but I sure do like it.