I have tried a few and always go back to strike putty by orvis. I have had this putty from them for ten years and still use it. Some times it will sink but I roll it into a ball again and all if fine. I also have noticed that a small amount of putty affects my casting none at all. I agree with the poster about watching your line. Even when I use the putty I often find myself checking the line for comfirmation. Sometimes the line lets you see if you are dragging bottom or something is nipping at the fly...then again Isometimes miss read my line
. If using a indicator, I like what will not move on my leader.