It would be great to read the article, since anything Blondie said or wrote is worth consideration, but I am of the opinion, as yet untested, that one or two panels of the junk sail should provide an excellent trysail.  Even on a single-masted junk, the centre of effort should be well aft if just the peak of the sail is raised, assisting the boat to hold it's head up.  The trysail may also be subject to flogging if the boat rounds up too far, unlike the junk sail.  David Lewis told me he had tried to use a trysail unsuccessfully on Cardinal Vertue in the North Atlantic, sailing home from the 1960 OSTAR in autumn.  The vessel would be knocked off by a crest, start sailing briskly along the trough, then round up too far (in response to the tiller being tied down) and the sail would give an almighty flog, shaking the devil out of the mast.  As Annie states, Roger Taylor has successfully hove-to under one or two panels of his junk sail on many occasions.  I think even Blondie would be paying close attention to Roger's conclusions, as he is one of the most extraordinary small boat voyagers of all time.

Interesting post, John. It's an article I've never come across, but I thought I'd reply anyway so that the topic gets refreshed and doesnt sink without trace. I'm sure someone must recall it and expect Chris Gallienne would be interested for the book he's writing about junk developments. 

Incidentally while Googling for the article - no luck yet - I stumbled across www.angelfire.com/or/petermarsh/ostar.html which contains a good summary of Hasler's doing (though not as good as Grahanm's in our Hall of Fame) plus a great summary of each OSTAR race, which Hasler of course initiated. Apologies that the link isn't active - dunno how to do that on my iPad.