Guys need some help learning to pull cranks.

Been 3 times now and catch about 10 yellow bass each trip, but can’t seem to catch crappie. Using bandit 300 crappie versions fishing 12-15 ft deep in 20-30 feet of water. Using various colors and speeds from 1.5-2.0.

What should I try different? Am I in the right area for crappie if I’m catching several yellow bass? Do yellow bass tend to stay at same or different depth than crappie?

any suggestions or areas to target?