I've got a wedding for the Sept dates - I know October's pretty booked, but I can't remember right now which particular weekends. I'll have a bike & kayak at the Wild Goose chase on the 16th - which seems like it's going to end up a bit of a TE get together.

Jug Bay's on the Patuxent, south of the route 4 (Pennsylvannia ave) bridge. It's a beautiful area. You (Zen) should join for the paddle at least.