Straight from the horse's mouth:
"Simply cast your crappie Slider to likely structure or target and SLOWLY (VERY, VERY SLOWLY) retrieve it back to you. Hold your rod perfectly still as you retrieve. DO NOT ADD EXTRA ACTION TO THE CRAPPIE SLIDER; just retrieve it ultra slow, smoothly, and steadily...."
You can read the rest here:
Charlie Brewer's Slider Company - Â*Â*Â*Â*Â*Â*Â* Weedless Crappie Slider "Why&How"