All I mainly use are the "Balancers" sold by Bass Pro. My current butts (until they get refurbished after testing them out this past season) have giant shrink wrap tubing over the cork and onto the Balancer itself to keep it in place. I used extra lead for these longer rods to help alleviate "tip heaviness". The more I used the "rubber coated butts", the more I liked them but I am still going to have them switched to syncork for next season.