Thanks for those tips on makeing the centerboards.My frend plays allot with carbon fibre & is in the process of purchacing a special vacume bag table.(all i know is that its quite an expensive table)Any comments on width and length? I would like them not to pretrude thru the hulls when they are pulled up but this would mean that the length in the down position thru the hulls would be only 500mm.They are currently 300mm wide& about 1200mm long.