Adrian,

Every year for several years I have headed out there for business and always hooked up with different folks to paddle either great falls or other local runs (Holtwood etc...) check out these sites.

http://www.monocacycanoe.org/

http://www.baltimorecanoeclub.org/smf/index.php  (look for Jay Herbig)

I remember one year when it was dumping snow I borrowed Jay's boat and paddle and did a little winter mission then dropped his gear back off the next day at a paddling meeting in a local school where a custom paddle maker was showing off his goods.

Hope that helps. Oh and be sure you check in with the Ranger Station on the MD side because I know they like paddlers to sign up and let them know when you going to make your run through the falls. If you don't they might be waiting for you at the bottom with a stern lecture... of course you could almost keep paddling to the door of congress if you wanted to... LOL

You just need a kayak backpack and some good ol' walking shoes buddy:)