As I came to realize shortly after I bought her, Seablossom is something of a hybrid junk.  She came to me with a forestay and two running backstays, and a small jib among the sail collection.
More to the point, it was soon brought to my attention that her mast is still in the original position, the same position as the old Bermudan rig. 
For comparison between Seablossom's rig and a representative proper junk rig see my Rig Comparisons folder; In there you will see a photo of Seablossom under sail, and Arne's Johanna under sail.  The angles on the two photos are not identical, Seablossom is slightly going away and Johanna is slightly approaching the viewer, but two things are still immediately obvious.  1: Johanna's sail is far larger relative her length, and 2: her mast is well farther forward.  It appears to me that the little jiblet that came with Seablossom was intended to bring the CoE forward to account for the general aft bias of the rig.
I have posted a photo of Seablossom on her trailer from the side at Members Home Page -> Your Online File Storage -> Photos -> Jeff McFadden -> Seablossom Structural.  If I could direct your attention there for a moment, you will see that she has a long keel with cutaway forefoot and keel mounted rudder.  (If it is not clear to you, the keel is sitting directly on the surface of the galvanized trailer backbone which shows clearly in the photo.)  It is somewhat harder to see the main cabin in the photo, but there is full standing headroom in the main cabin which does not exist forward of the cabin under the foredeck.
So at issue here is the question of whether I ought to plug up the hole in the cabin top and move the mast and step forward, stepping the mast through the foredeck and building a new, much larger sail to match Johanna's, more or less.
As grist for the mill here it is also worth mentioning that Seablossom's flat sail is not in all that good shape as it stands, although it would sail (especially inland) for probably several years.
I could do all this using the existing mast, and in fact the existing mast would in the shuffle get moved out of the main saloon and into a little-used area forward, another benefit for the whole project.