The idea of the permit system is that you have to agree to all their terms before downloading it, so as well as promising to be a good boy/girl there's also a bit about not suing them if you fall in. You're also agreeing to wear a helmet at all times
TBH I slightly agree with what the guy's said - some canal towpaths are a slippy layer of smooth mud just feet away from unguarded open water, and I certainly wouldn't advise people to ride on them if/when quiet roads are an easy alternative.

TBH I slightly agree with what the guy's said - some canal towpaths are a slippy layer of smooth mud just feet away from unguarded open water, and I certainly wouldn't advise people to ride on them if/when quiet roads are an easy alternative.