here's a suggestion if you want to learn to bowl on heavy oil and learn to bowl well on it. bowl with your plastic ball right in the niddle of the lane, there will be more than enough oil there to create a great heavy oil shot, and yes your scores will suffer huge in the beginning but i garuntee that they will come right up and you will posting some decent sets in no time. yes it does suck bowling with a plastic ball cause it doesnt look as cool as a reactive but that one plastic ball can create alot of different patterns for you to play on, even on the easy house shot