Can someone tell me more about the block/twing setup attached to the boom for the spinsheet.......looks interesting. I've never seen that setup before.
ILLUSION has a line that pulls the spinnaker sheet out toward the end of the main boom to stretch out the foot. This is what you're seeing. It has the effect of moving the sheet point for the chute "aft", at least as far as the chute feels it, much further than you can accomplish on a 40' boat. This opens up the leech of the chute, just as it would if you move the jib car aft for a genoa. That allows the air to flow across the chute and exit without blowing into the back of the main sail. It also stabilizes the chute in heavy winds, which is what you're seeing in the picture.
Sally's shop is closed now but the articles are still there. Here's the "Out-Grabber."
The Cal 40 GREEN BUFFALO is racing in the Singlehanded Transpac this year. In fact the start is this Saturday. Look for Jim Q to at least win his division.