Super Sunfish; the cross-bar has the traveler. Alcort's attempt to broaden the appeal of the lateen-rigged Sunfish to a wider audience. Two rigs, one hull. Not a bad idea, but it didn't catch on on a commercial scale.
Do you have all the pieces (mast, boom, sail etc.)?
I have the standard mast,boom, and spar..In addition I have a longer mast and a spar(boom?) which is longer and has a hook thingy on one end...I will try to take pics of the additional parts this weekend...Also, I only have 1 sail(and it is in bad shape..Time for a new one.)
There's a complete set of rigging diagrams and instructions over at Sunfish Sailor. http://groups.yahoo.com/group/sunfish_sailor/ If you'd like to see how the boat was originally set up.