Noel,
Take a look at some of Marc St Louis's designs recently posted on here for good examples. There are many equipment and draw weight classes. From 50# & under to unlimited bows held by the feet and drawn with both hands. There are primitive classes and those that allow modern materials. Right now, I'm working on some bows with a Tonkin cane bamboo back, Maple core, and Heat treated Tonkin cane belly designs that are about 56" nock-to-nock, and draw mid-80#'s.
The US Flight Nationals take place at the end of summer each year at the Bonneville Salt Flats. This year, it is over the first weekend of September. We have a pretty good time and it is worth looking into it if you like the more extreme side of archery.
-Alan