Welcome to Philly (my condolences).

There are lots of places to sail Hobie’s within 2 hour of Philadelphia, depending on what you’re looking for. Ocean access: Most NJ shore towns have beach access for catamarans (by permit). Stone Harbor has a beach at the south end that is free for daily launches. Inland bays: Great sailing on the Barnegat Bay in Bayville, Trixie's Landing/Brennan Concourse. Lakes: In Pennsylvania, Lake Nockamixon have an active Hobie fleet.
Go to
http://www.div11.hobieclass.com/ and check out the fleets. Better yet, come to Wildwood on August 14-15 for the Wildwood Classic Regatta. Meet other Hobie sailors and find out where they like sailing best. Check out the NOR
http://mysite.verizon.net/HobieFleet443/Wildwood10_NOR%20Rev%202.pdf This is a great event.