The centreboard size has been reduced over the years on Mosquitoes. The measurements I've given are the maximums possible in the rules but in reality any boat built in the last 10 years is using boards which are much smaller than the maximum.
This brings Alter cup to mind… <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" /> Funny but it seems the neophyte F16 builders still have much to learn when it comes to practical application… <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />