On to the masts, which are called kia's and look quite interesting.  The wa'a kaulua sails were triangular in shape with a straight vertical kia (mast) and a 'o pe'a (curved spar).  I made the kia in my usual way with a small bamboo rod hinged near the base and shaved down to 1.5mm above the hinge.      For the 'o pe'a's, I boiled a couple of bamboo rods for 20 minutes, then rubber-banded them to a couple of wood scraps that I had shaped to the proper curve.   Whil