Hi Ron
So if I set it up to use one line with blocks to the cockpit after pulling the single line reefing in, I guess then I still need to go forward to hook the ring at the Tack to the hook?
No. Your single-line would be as in your second picture, with the exceptions:
A.) At the aft end of the boom, you'd have a block mounted ()on the stbd side, in your pic) via a web strap through the cringle. Your line would tie to the boom on the stbd side, through the new block on the same side of the sail as the side it runs forward. (my line forward runs through the mast.)
B.) On the front of the boom, (to lessen friction of the line dragging on the cringle) place another block up on the sail's cringle using a web strap. I deleted running the reef line through a guide on the mast, as that only adds friction and wear on the line. In use, this block holds down the tack of the sail like a hook would. SO, the line would run from the aft, through the forward boom block, up throught the block on the sail, to the mast-base turning block and on back to the cockpit.
With my loose-footed sail and lazy jacks, I have not yet had the need to tie the sail down with the mid-cringles. My second reef is on the port side of the sail.