That extra center space gained, should make the system operate better raising or furling. It also will eliminate another slapping line on the mast. And...I'll go from a fixed point up top(appealed to me for the slapping problem-now solved) to more popular control lines to cleats at the base. That will change the bottom points to 2 separate loops per side.

I'll lose the blocks at LJ connections and just go with spliced thimbles.

I see now I want an easily stowed-on the mast set up, but I'll also(if it works well enough) be using it to raise the sail. This means I won't have to have the sailcover built with slits, but I'll wait on that decision. I may find I do sail with it deployed a bit, or a lot. There are many instances where I would be happy to just leave the sail in the LJ's late in the day, or for a lunch stop. I'm not that diligent about covering the main religiously when I'm out for an overnight.

Most of all, I won't attempt the finished product at first. The first few feet of my main contain a lot of fabric. It will take some adjustment to find the best aft points to contain that. And the right adjustment to allow easily bringing the lines to the mast to a clip or over the cleat.

For now, I'll fasten the two small blocks to my spruce spreaders and reeve them with messengers lines for launch. Assemble enough line, thimbles, cut a bunch of cleats out and varnish them, then when I fit the main, I'll mock it up in place with ties around the boom-bowlines for loops, and start moving things around. I imagine this new main will be even more challenging to furl on the boom.

I'd like a 3 strand line(all my running rigging is) and may make it out of nylon for the first mock up, then go to a 3 strand dacron with less stretch and maybe slipperier material, or maybe not. Too many unknowns to try to build it in one session.

On top of this project with the new main, I have to install hardware for jiffy reefing, from scratch. I have questions on that as well.