Things I've learned about skiing by screwing up!
1. Dremel rotary tool and grinding wheel attachment does not give a consistent (or even acceptable) edge and base tune.
2. Belt Sander with coarse grit belt is not an effective base grinder for final touches and structuring.
3. When first trying to hit some decent airs in the terrain park, DIN should go DOWN or stay the same , not go way UP.
4. When sliding out on the ice and falling over a beautiful, ripping lady skiing alone, don't merely ask if she's alright and then ski away without offering dinner to make ammends.
These are pretty much the only things I regret doing in the past few years except for the last one which I REALLY, REALLY regret.
Anyone else make any goofs that you had to stand back and think, "What was I thinking?"