I'd suggest checking out the Day Sailer Class association Web,
www.daysailer.org They often list used gear and many members of the Association are big on helping young newbies! Rudy at D&R Marine may not have any used items (though sometimes he does) but he sells OEM sails that are not significantly more $$ than used ones, check eBay for a company i nSouthern Rhode Island that sells new sails (unsure of quality level?) at even better prices than D&R. For any Day Sailer SPECIFIC parts, again try D&R (508) 644-3001 or Cape Cod Shipbuilding (Wareham, MA,
www.capecodshipbuilding.com)
Do you know if this boat is a Day Sailer I, II, or III? Sails and most rigging are same for all, big difference is in centerboard control setup.