Thanks for the link etc Bruce!
* at the risk of making myself sound less rugged (THAN I CLEARLY AM), Charles River Kayak rents these things, and the 4.5 mile journey each way ain't too difficult, even for a newbie kayaker like me. This is the 3rd time I made the trip, previously though I rented tandems.
* Kayaks don't usually have anchors, but they're hecka useful for stuff like this. The one I borrowed from a friend was almost overkill - and you need maybe 75-100 feet of line.
* Yeah, the cops /coast guard etc make a pretty clear boundary... in fact you can see their boat in the shot. Get too close before hand and they'll warn you off.
It's a pretty friendly time w/ the boats. You get a few drunken louts on some of the pleasure boats, but nothing too bad.
Even more photos here:
http://kirkjerk.com/photos/misc/2009july4/