I know this is too late to help, but for future reference, the folks at Fishing Bay Yacht Club in Deltaville, VA actively solicit for crew for their race schedule.
The website is Fishing Bay Yacht Club: Main
There was a race Saturday up to Urbanna and I know several of the "regulars" (myself included) on the boat I crew on had other commitments for the holiday. There were probably other boats in the same situation.
At any rate the fellow that is in charge of the guest crew program brags they've never left someone at the dock so if you can get down there it's a great opportunity to get some sailing in for the cost of driving down and perhaps some snacks or beverages for the crew.
s/v Palmetto Moon