Marlespo, I think the photos aren't coming up because your album is password-protected. Would love to see them, though!
Krissy, another thing to keep in mind is that the thing about narrow boats is that they're darn close to being flat on the bottom. That's because since the canals for the most part are man-made, they didn't want to dig more than they needed to to get the job done...hence, most of the canals are waist-deep anyway because the boats don't need deep water to run. You fall in and all you need to do is stand up. I'd be more afraid of the junk that can be in the water, actually. So, if you do fall in, make sure you wash off with clean water.
I think canal boating is one of the best secrets that England has. Not too many visitors even know it exists, which is a real shame...best way to get a flavor of the UK ever imaginable. You can even hire day boats, or weekend boats. You can also hire a boat that has someone else do all the work (but the work is part of the fun).
If anyone is interested in doing a UKY boat trip, I'm interested in being a part of it. Could be a day or weekend thing, and one boat can take up to seven passengers, even overnight, so sharing expenses is possible. It's basically a "floating self catering hotel" in that a boat has beds, eating area, living area and a kitchen and bathroom (typically with a shower). You can bring your own food, or stop at pubs along the way.
We're moored near Bristol, and a day trip from there in to Bath (and back) is quite doable.
modified for spelling error...grrr