But Paul,

While double ratchets will make holding the sheet a piece of cake, they don't make sheeting in the spi any lighter !

I really do want to prevent a collapsing spi, bearing off is often not quick enough. I know this problem comes from a skipper steerage error but sometime while sailing in significant waves you just can't avoid it. In these instances I really like to use two hands and do so in a quick manner.

Wouter