Watching your video you can see what happened quite clearly.
Firstly you ease the sail without bringing your weight in fast enough.
As the boat starts to come over on top of you, you lean in pushing the tiller away from you which makes the rudder act as an elevator, pushing the boat over faster.
Also you grab hold of the hiking strap, to stop yourself falling backwards & your body weight pulls the boat over faster. The boat turtles because you don't let go until the mast tip is under the surface.
It just shows what you can see & learn from videoing yourself. Looks great fun as long as the water is warm...lol
I did exactly the same in my Laser recently.
I see you guys getting up at less speed than I'm getting. I THINK my rod has dug into the foil flap so I don't think it deflects the edge enough to lift. I will work on that next spring.
Also when I try to pull the rod back to deflect the foil - it feels a bit hard? IS that foil hinge suppose to be light or pretty stiff?
It Was fun water is normally warm, not 38 at night here "F" now and I just put the boat away last weekend. cold weather came sooner than normal (hahaha global warming ;-))
Something I thought of after a day of capsizes... putting a length of rope - that is attached to the center of the deck? I find when I'm losing it and falling off the side I have nothing to pull me back up. Main sheet can't as it eases out. hmmm just thinking as I type this. I wonder about a hobie type hook for trapping out? Something that as I slip back will retain me. But at least a line to pull myself back up would help.
Thanks for the recent video ... I saw someone tip over. He saw around back and pulled a righting line from in the water!?!?! I didnt try that but mine were turtled. I Wish people didnt edit out their fails and recoveries.