Ouch -- sorry to hear of your troubles.
Interested in what failed and any pics -- as the rest of us can check our boats:).
Options beyond Dick's ideas, Dave King fixed his boom by carving a plug from wood that fit tightly into both broken ends and I believe he is still sailing that way...
OEM to Westsail for masts and booms - LaFiell - can/has reproduced the original shaped masts and booms -- but this wouldn't be fast - unless they have one in stock.
Will - has a boom for sail in Florida see - http://www.westsail.org/forsaleforum/3632821#3632821
Jay