A few years back, when I was first starting to ride, I got hooked up with a AASI Level 3 instructor who had moved on to a financial job. It was actually on this forum. We met up at Keystone and I paid him $50 cash for an hour and a half private lesson. To this day, that's the best $50 I've ever spent on snowboarding. I went from a side slipping goober to linking turns on blues in 90 minutes flat. An instructor who knows what he's doing can take a look at your riding and give you tailored advice that will have you grow by leaps and bounds virtually instantly, then give you advice on what to do when you're on the mountain afterward to continue your progression.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz