Geoff Husa has been working as a missionary in the mountains of Papua New Guinea where he recently completed his Wa'apa, heliported it to the coast and sailed it with two companions 90 miles to windward on the NE Papuan coast. The amazing part is that Geoff had no sailing experience. Well, he does now. He's a good writer too and his blog entries leave out no details. http://shan-skailyn.blogspot.com
The fin attached to the deck was intended to prevent the canoe from spinning while being transported by the helicopter. It didn't work.
Newly launched, Den's 24' Ulua cranking it on out in the Manukau Harbor, New Zealand with a temporary windsurf sail. A more crab claw styled sail is in the works, but 11 knots ain't bad for this little rig.