I've never had any trouble getting the Blade back up on my own, and I'm about 85kg. I've only ever capsized the Blade in a fairly decent wind, and I think I'd have trouble in very light wind.

I've not turtled the Blade, but I've had done with other boats. The only technique I know for righting (without a powerboat) is to sit on very back of the leeward hull, so that the bow of the windward hull lifts. The boat will (eventually) end up on its side.

Paul