Running out from a miss and an easy leave by a weak player is great, but it is vital to recognize the difference between that and when you play a good player who will hardly ever leave anything easy when they miss. If you cannot consistently return their safes until THEY leave you something, or are capable of making something out of nothing then you have a big problem in 1P.
Curious, I find the opposite, Straight Pool is one of the easiest games to play for practice, you just setup a break shot and go for it.
I've only ever played 1IP a few times but I'm happy to play almost anything with anyone if that's what they want to play. Just let me know when you are in town again.