Darts are duct taped in at the tack and throat to shape the sail, fastened on both sides. Becket is a thick strap of willow bark. Friction on the halyard was not an issue at all on this scale. An initial experiment using an oar to steer convinced me that a real rudder would be nice. Counterweight is steel shot cast in place with epoxy.
Tiller is a willow sapling, with a slot gnawed out with a skillsaw for the rudder head.
Tricing line used to hold the rudder up for beaching. This rudder worked amazingly well, and was very quick to build. There's also a wingnut on the rudder pivot to control the amount of friction and play. It easily kicks up when hitting obstructions. It flares the wrong way on one tack, but it must have worked fine as we did not have too noticable of leeway.