Cabelas has the perfect bobber stops. They come in quantity of 40 in whatever line class you want. They hold snug to the line and won't slip unless you put pressure on them. They are more precise han Basspro bobber stops. They are also color coded for the line class you want. That way you don't have to search so much. Here is what I keep mine in, picked it up at craft store, sections screw together.