I have used two things: Invisigrip-clear, like contact but a bit grippier; deck tape for skate boards! My long arm dealer told me about the deck tape. It comes in clear or black (I think). It feels like a plastic sand paper and is sticky on one side. I went to a skateboard shop and they sold me half a deck's worth for about $3! I have most of it left as I only use dime size pieces. I would use both again. I seem to remember someone putting rubber cement on the bottom...? some days I NEED it.and someday I don't!