I recently had what I would consider to be my worst ever foil crash. After over 1000 hours foiling it was a bit of a shock to the system.
I was riding my smaller foil and returning from a cruise up the coast. It had been a dry session so far and I was relaxing. I fell. No big deal so far.
I did a fairly normal water start and slightly overcooked it. The board came straight up on the foil, as I intended, but then I got slightly high sided and got backflipped off the board.
The board stayed up on the foil. I was slammed on my back with my head under water and one foot in a front strap. I could feel my ankle getting stretched and it felt like it was breaking.
The board dropped down from the foil and a bit of writhing got me out with a sore ankle and a banged knee.
I came up to find the board had done a full macrame job with the lines. It was woven between the front and rear lines with a back line wrapped around the stabiliser.
I reached up and grabbed the front lines past the board and held the kite depowered. It was sitting on its tip in relaunch position.
Next I started on unweaving the board and foil. It took a few goes. Occasionally the kite would buck and spin. It generally quieted down if I held tension on the front lines and reduced any control inputs from the tangled board.
I got each line off the board and with a bit of fiddling got the lines unwrapped from the the stabiliser.
I water started and carefully rode back to the start beach feeling a bit fragile. My ankle wasn't broken but it hurt for 3-4 days after.
Lessons learned? 1. Shit happens. Deal with it.
Expansion of lesson 1. Shit happens under almost any circumstances. Huge jumps on the foil? Not a problem. Big waves and absurdly strong winds? Piece of cake. The last tack for the day or an oopsie on a water start? Hold on to your hat!!!!!!
PS. The usual cause of board through the lines for me is riding hard and fast with the kite down low and the foil banked right over. My body hits a bit of chop and I fall and the board continues on through the lines. Deal with it. See above.
PPS I find the "do this special thing" advice quite bizarre. If you've got the skill and the time to do those falling tricks then surely you've got the skill and the time to not fall in the first place.