I initially had a lot of trouble with minnows as they would wrap themselves up and tangle the line around the split shot I was using. This was a big issue when fishing slip bobbers or tight lining. I fished with Joe Slab and Shut Up and Fish one day and David (from shut up and fish) was using a barrel sinker. Once I started using this type of weight it fixed the problem for the most part.
The other thing I did was keep the bait moving. Crappie like to chase a minnow around looking at it at close range before taking it. I think this panics the bait which proceeds to wrap itself around the weight. Once I drop the minnow down to the maximum depth I am fishing, I count to 10 or 20 depending on how the fish are reacting that day then reel it up one crank. One day fishing the bridge pillars at Ray Roberts, I had some folks in a pontoon fishing right next to me catching nothing while I pulled up one keeper crappie after another using this technique. They eventually left in disgust. I moved over to their pillar later and caught several nice ones of it.
The crappie at Ray Bob are not hungry. In the evening, the whole lake becomes a sea of shad balls. Plenty of food in that lake. The crappie will take the moving minnow as a reaction strike. I kept all my dead minnows and they worked just as well as the live ones using this technique.
The rig I used was a barrel sinker above a barrel swivel with 18 to 24 inches of fluorocarbon line with a number 4 hook.
John 21:3 Simon Peter saith unto them, I go a fishing. They say unto him, We also go with thee.