Spinnaker chute

Probably the easiest way would be me sort of circle of pvc that points forward next to the pulpit




http://www.ebay.com.au/itm/1-Yard-Sky-Blue-Waterproof-Ripstop-Nylon-Fabric-Material-For-Outdoor-Tents-Kites-/251564919066?hash=item3a9270091a:g:MioAAOSwk5FUtvQn

other links

http://www.freedom21.info/Freedom21SpinnakerChuteMouthV2.pdf

http://laser2.est.org/gallery/Spinnaker-sock/



Below: Castle 650 from Canberra Yacht Club