Slipping carriers on round bars

To anyone needing a solution for their kayak carriers slipping on round bars, I found one!

I put rubber splicing tape which can probably be found at home depot but definitely at an electrical supply store where my carriers sit, put on my carriers, put on my kayak and let the carriers adjust to the hull, tightened the clamps, and it’s solid as a rock!

Thanks, Remeny. Simple, quick fix.