I was pitchpoled late yesterday afternoon in about 18mph winds while going straight downwind in choppy water. Both bows went under and I went flying. When I came to the surface, my Wave was heading downwind on its side with the trampoline acting as a sail. It was moving faster than I could swim! I wasn't wearing my lifejacket

, which was clipped onto the trampoline. Despite my stupidity, luck was on my side. I was only a few hundred yards offshore, with an onshore wind. So I swam, fully clothed (shoes, sunglasses etc) ashore where some friends had gathered and had prevented my boat from being damaged by the rocks. I was exhausted by the time I got to the boat. I righted the undamaged boat and sailed home.
Lesson learned the hard way: ALWAYS wear the lifejacket.
Question1: What to do to prevent the boat floating away from me faster than I can swim?
Question2: How best to prevent pitchpoling? This is the 1st time I have capsized, but not the 1st time the boat has tried to pitchpole.
Thanks