It gives me a stiff back – I was paddling with a novice, so I was at the back using J-strokes which I can’t do ambidextrously, so you you tend to get a bit sore from the lop sided exercise.
A lot of the time you’re really just going to be steering while the current does most of the work. I do seem to remember some frantic paddling to get across current though – my friend wasn’t particularly good at anticipating hazards either!
Mapping the stop offs will help, especially if you can get permission from the landowner to make camp. But you might struggle to stay on target over 4 days.
My only other advice would be to do it before 15th June as there will be far less anglers on the river. Most of them are OK if you bid them a good morning, but a lot of them have a similar attitude towards canoes that walkers have towards bikes!
Great fun though, which river? I’m guessing the Severn?