I've spent the last six weeks or so upgrading my 17 foot grumman canoe into a pacific style proa wannabe complete with shunting rig and lanteen style sail. Ultimately I would like to have a crab claw sail but I've been out a few times now and the rig is working pretty good.
Lots of rope a dope
Added quite a bit of bonafide sailboat hardware... can trim the sail from either end.... v jam cleat stops on most adjustments.
The paddles as rudders work very well... the bungee cords pull them up out of the water when not in
use... it was too easy ;)