Hi, I'm new to Laser sailing, but used to race Moths. In my moth I found a mainsheet centre-mounted cam cleat on the block great for the long pull-in after rounding the leeward mark, and when you're changing sides when tacking. Tillman and Powlison's book "The New Laser Sailing" (1983) mentions it in the tacking section, but my local Laser shop says the only mainsheet cam cleats allowed are the side deck ones. Who's right, and if it's legal, where can I get one? Many thanks