In fact Jeremy brought up the idea when I first started experimenting. The nice set up on the racing C&C again requires a ball bearing car which I'm going to go without to keep the seating back there. I looked into boats with similar sized mains with multi part main sheet to do without a winch. To get the purchase, they need to be quite large, multi pulley. And even with the best, I bet I'd be looking for a winch in some conditions on my boat.

All this extra stuff is race priority and definitely required to be competitive, but overkill for how I sail. Plus, these old boats with low aspect mains and heavy wooden booms aren't easy to adapt much of the new sail handling tech.

Here's an old double ended sheet set up without a traveler on 60's S&S yawl.