So, I found a solution. There is stuff called Gorilla Snot that is used for helping hold guitar picks/drum sticks, and I use it for disc golf and violin bow. It's make of tree sap and honey. What is crazy about it is that after some use it just dissolves like oil or lotion on the skin (It actually says on the package it will dissipate). I just put a tiny tiny dot on my fingers and it allows for the slightest amount of grip (almost as if my hands are dry as if there is zero lube on the cube). After about an hour of cubing the stuff was gone off my fingers and not on the cube in any way. It was actually nice. It wasn't sticky, but just "not slippery" anymore.
So is this legal to do at a comp?
http://ecx.images-amazon.com/images/I/81yWHFglzUL._SX425_.jpg