Minibot wheel slip

[J.Warsoff]

hi everyone. so after much redesigning, my minibot is nearly finished, i just need a locking mechanism, which is being worked on. so i was testing my minibot on the pole, keeping it on with zipties. it certainly has enough grip on the pole, but even so, the single drive wheel still slips, and the bot does not climb. is there some kind of modification i could do to the wheel/tire to increase traction? someone suggested i use lighter fluid to irritate the rubber and give it a little more traction, but i want to know what you guys think. any suggestions will be appreciated.