Hi Scott, I have a Split Junk on a 16' Wayfarer.
I copied Ah sups sheeting system which has the mainsheet running from the helm, through a turning block on the transom to a triple block. This triple block substitutes for the blocks normally used on the transom of larger boats through which the mainsheet normally runs and creates a mechanical advantage to ease sheeting in larger sails.
Because the smaller sails of a dinghy aren't as strenuous to sheet, I can get away with just that single sheet in the cockpit.
Another separate line is run through the triple block and the sheetlet's attached to the battens. On Ahsup, when a reef is put in, this line will need to be shortened, which Ahsups owner does by tying off the line at the end of the boom. I took his idea one step further and brought the loose end (bitter end?) in board along the bottom of the boom to a turning block on the boom at the mast. I can then cleat the line off when the excess line is pulled in. ( This is the same as pulling in the excess mainsheet on a normal junk sheeting system when reefing)
The advantage on a small boat is only a single line down in the cockpit. The separate sheetlet line controls the twist, (and when I get more familiar with it, will only need to be adjusted at the same time as the reefing/unreefing takes place at the mast).
The Split Rig reduces the work needed for running parrels as it remains in the same fore/aft position regardless of sailing direction. The battens parrels/ downhauls are only adjusted when reefing/unreefing.
Hope this is of some use.
David D.