I'm kinda in the same fix here on Maui. There's a dealer but they don't stock parts and are only interested in Adventure Cats and selling Waves to hotels.

For Hobie specific stuff I like Surf City in Santa Cruz. Jeremy knows his stuff and will ship.

http://www.surfcitycatamarans.com/

For generic items there's the store Rick runs. Click on the OnLine Store link at the top of the page.

Murray's is another source. They did carry Hobie stuff but the dealer they bought from went out of business.

http://www.murrays.com/mm5/merchant.mvc?Screen=SFNT&Store_Code=MS