Bristol YC Aclass fleet does windward/leeward on Tuesday nights.

So, its pretty simple, upwind, downwind with the start line being a mark and the committee boat. The courses are short, and the race area isnt that big, so its only 2 or 3 tacks each way.

For the start, they use a system of whistles, so you dont even need a watch, you just listen for the whistles. The guy on the committee boat blows the whistle at a series of interervals, which increase as the start gets closer.

Bill