Where do I start...

Went out in our final winter series race today and things went from bad to worse. I had a bad start... up the first reach I somehow got tangled in my main sheet and while trying to get out of it I somehow brought the boat over on top of me... and you guessed it, as soon as the mast hit the water she went straight under (turtled).

I attempted to right the boat but I was alone and didn't have the leverage to pull it up so I got towed over... and retired from the race.

I keep reading that righting a turtled boat is 95% technique but no one divulges the info...