Parallax wrote:

Use auto airbag technology to quickly fill an airbag at the masthead
if the mast goes beyond horizontal. This beats using a cylinder to
fill it because of the weight of the cylinder. The airbag would NOT
quickly deflate and might keep the tri from going turtle.

The idea, but not the technology. Airbags must be almost explosive to do
any good. That's why they kill children. OTOH, there are slower, higher
volume gas generators used in military and other applications. On guy
used one to power a one-shot turbocharger on a VW bug a couple decades
back. Imagine this big condom running up the mast to flip the boat back
upright.