I never use tip ups for crappie. Their bite can be light you'll miss a lot of strikes. I use a flasher and an ultra-light jig rod. You need and ultra sensitive spring bobber. I try to find 30-40 of water. If using a flasher look for suspended fish. They are usually feeding. If using bait be a couple feet off bottom. Crappie look up and will hit the bait from below it. If using a jig, pound it off the bottom and then real up a couple of feet. They can be finicky so presentation is key. Keep your jig or plastics moving at all times.