As a beach cat sailor we would first take the mainsheet system off the sail to prevent a new capsizing just after the boat comes up and to release the water on top of the main more quickly. Also a help-line attached to the mast makes it safer to lean backwards in order to push the lee-float under without the need to climb onto the slippery centreboard. This is particularly important for your own safety in big waves and you,ve got a rope to hold onto just in case you maybe slammed off by the motions of the boat. So that line we attach to the foot of the mast and take the other end to either side of the boat where we need it. Also when you sail with two people on board they need something to hold onto and not loose contact with the boat.
In Miranda's capsize recovery video it shows her furling the gennaker and uncleating the jib sheets before righting the boat. Forget that when racing - just get on with flooding the leeward ama by sitting on the front of the ama and bouncing on it to burp the air out - especially the last air bubble when it's under water but still not fully sunk, by standing on the front. Then when you're standing or kneeling on the daggerboard, just before you allow the mast tip out of the water - lean in to the cockpit to furl the gennaker and uncleat anything that needs it. Then right the boat and immediately grab the tiller to make sure you don't tack to avoid capsizing on the flooded hull which needs to be on the windward side as you sail upwind to drain it. Takes about 3 minutes
I've righted my Weta alone in 35 knots of wind with 3ft chop during a race. Uncleat the sheets before you start righting it then sink the windward hull and move fast into the cockpit as it comes up quickly once the wind gets under the sail.
I managed to turn mine over last weekend, wind had risen to 20 - 25 knots with 2 - 3 foot chop. I had been sailing for 6 1/2 hours at this point and was getting a bit tired. Righting the boat with my 90kg only took a few minutes, a lot easier than I had imagined it would be.
I did some right tests at 0 Wind with a Hobie 16. I can do it alone. No mast float. I use a pulley system and a watertight bag that i put on my back to get more weight. About 20kg of water + my 80 kg.
Over 1200 Wetas have been sold worldwide! Firstly it's really hard to capsize unless you fail to release something (as you can see in the outtakes). Secondly Miranda is light and you can flood the float much faster than shown if you sit and bounce right on the end or are a little heavier. For speed, I leave the sails alone until the boat if righted 90 degrees and then you can just uncleat the jib and furl the gennaker while standing on the daggerboard. There's generally no need to uncleat the main since the windward hull is flooded so it's not going to go over again and you need to sail upwind to get the water out of the float. There is a breather hole through the arms that attach the float to the boat - but its not large enough to flood the hull as it's designed to allow for air expansion/contraction in hot/cold conditions.