Martin,

I think that your 16ft hull design is really interesting! I think I can see what you are trying to achieve with the concave stern underside and the 'sprayrail'. I think it's fascinating to see peeople trying different ideas on these boats and only head-to-head testing will show us what works and what possibly doesn't.

You say the all up weight of the RC16 is 140Kg? Have you actually weighed it or is that a 'calculated' weight? If you put a full F16 rig on the boat with the associated jib track and fittings plus spin gear, we're looking at what? an extra 15Kg perhaps? - that's a pretty hefty F16 at 155Kg! Are there any opportunities for weight saving in the platform?

I'm just thinking that with the external stiffening offered by the spray rail there may be the chance to reduce the hull layup further? It would be really cool to get a boardless F16 that is under say 120Kg or even closer to the minimum of 107Kg for a sloop F16.... <img src="http://www.catsailor.com/forums/images/graemlins/laugh.gif" alt="" />