You can also try setting the ball save to a longer time, setting the timers on any modes to last longer if applicable, and awarding an extra ball for getting a fixed replay score in addition to the five balls. Can always reset the scores like you said and go back to defaults once you have the shots, rules, and strategy figured out. No shame in having fun. Do what works for you! The only caveat is that if you do anything super cool like get to a difficult wizard mode, it is a bit bittersweet.