I have a system that is patent pending.you can see it in the cue gallery under carbon cue. The system hits as good as a glue tip. You see I won a game last night, I had a difficult cut, so changed to a soft tip to get spin on the 8 to make it into the corner pocket. I was told it cold not be cut in. There was no clear pocket to bounce because there was still 6 other balls on table and close to the 8. So changed tip and won.They called it a fowl as changing tips is not allowed in the rules. I have been searching rules and can not find such a ruling.