Kayaking is great – boating was my main sport and job for some 15 years. Over the last few years, with the scarcity of rain I’ve noticed a lot of river boaters moving move into biking as their main activity, so you're bucking a trend. Anyone else notice that?
UKRGB is good, can be a bit up its own ar$e at times, but the advice is sound. I'd second the advice about getting down to a club or get some coaching. Don't bother with the BCU, and nobody will check your license if you want to have a bumble on a quiet stretch of canal.
Edit: I live near the Waesley Hills and have a spare boat, if you fancy a session at some point, give me a shout.
dave