I think aiming is feel and getting used to a machine. The ramps on Spiderman are totally different than the Metallica I have sitting right next to or any of the other machines I've played. So it's just spending time making the shots. What's more important to me is recovery and save skills. I spend most of my time working on saving balls so that's it's second nature. That way I can have a lot of attempts learning the aiming on a machine.