Log Canoes on Chesapeake Bay

We were sailing out of St Michael's MD into the Eastern Bay in August when we saw one of the most amazing things I have seen sailing a log canoe. They are about 25' long and made from ~7 logs cut from the same tree. Because they started as working boats on the Chesapeake, they are flat-bottom with sliding planks using crew for ballast. They have the most amazing rigs on any boat I've seen. We were lucky enough to get caught in the midle of a race. Seeing 6-8 of these sailing against each other was absolutely spectacular. Zephyr's blog has a ton of great pics.