I am converting my 30 foot sloop
to a junk in the fall of 2013 and have been doing a lot of research
. One thing I have come across is a general recommendation to use double sheeting on the forward sail. Double sheeting is a pair of sheets
to each batten, with one set leading to port, one to starboard. See Hasler/MacCleod for details. Fitting the two pairs of sheets
allows the leech of the forward sail to be fitted closer to the mast
of the after sail. This can give you increased sail area by shrinking the void area between the masts - whether ketch
or schooner. In a multi-mast rig, you generally want all the sail area you can squeeze in.
Good luck, and post some pics when you're done!