For casting, I tie the spinner rigs only about 30" long. Tie the loop extra long...maybe 2 1/2 inches. Also, put a small bead in the loop to protect your knot. Slide the loop through the egg sinker and attach to a snap swivel. Now your sinker is captured and won't slide up the line. You can cast as hard and far as you wish without ripping off the worm off of course.

Let the rig hit the water. Count down in seconds anywhere from 5 to maybe all the way up to 15.
Mix it up as you experiment different depths. Close the bail and reel in to determine the depth you will catch fish at. If they bite at 9 or 12 seconds for example....there ya go.

You'll catch them at Vermillion doing this. Good luck!