Here's a tip from Mike Swann (mike.swann@natpower.com) on tying a bowline one-handed.
	Step #1 Hold the rope around your waist (W) and pass the running end over the standing part.	Step #2 Without letting go of the running end, pass this over and around the rope towards you to form a loop around your wrist.
	Step #3 Pass the running end behind the standing part and take hold of it again.	Step #4 Pull the running end through the loop to form the bowline. Secure with an overhand knot(K).

Hi Karl, Just received this mail. I had a quick look at your site just to check, and I notice that the completed knot you show in blue is actually tied with the tail on the outside of the knot. All the authorities that comment on it assert that this configuration is more likely to slip than when tied with the tail on the inside. Any feeling on that? Do you think it might be wirth adding a note to that effect? Cheers, Mike