If you got flipped with both amas out, presumably you could leave them both out to right it, as you sink one anyway whilst righting, it would also give something to grab onto to hang off to help apply leverage.
Without wishing to teach my grandmother to suck eggs..On my dinghies, I fit righting lines each side under the gunwhale that are attached at one end, roughly in line with the centre board and then a long elastic that runs to the stern, around a pulley and back to the original fixing point. When capsised, this gives me a rope to hang onto to exert leverage to help right the boat and when not needed, the elastic keeps it tucked up out of the way.
I wondered whether something similar would be worth attaching along each ama?
As a fellow dinghy sailor I had a similar thought but if the righting line is attached to the opposite ama to the one you stand on then it would put a lot of strain on the elastic holding the ama in place. I think the righting line is a good idea for stability when standing on the ama, especialy if you are a slim sailor who may be waiting a while for the boat to right. I will be tying mine to the bar behind the seat and just flip it over the adventure to use in a capsize, not as much leverage but at least you will still have stability and maintain contact with the boat when righting in rough conditions.