Re: Fender hangers...too many choices!
Two options that I like:
1) A rolling hitch around the stanchion gives you a height adjustable fender. Great if you don't know if you'll be tying up to a dock or rafting up with another boat. Works best on single lifeline stanchions.
2) A caribinier-type device at the end of a fender line that is already set to the correct height for your boat and dock. Clip this to the lifeline stanchion bases. Any crew person can figure out "clip one of these to each stanchion" without having to know any knots.
When I first got into sailing I liked those plastic clips that Davis sells. Then I found out what happens in rough water: the plastic clip breaks and your fender ends up floating away. If you are unlikely they put a high load on your lifelines in the process.
boats that I sail on regularly: Pearson 28-2, Rondar 505, Yankee 30, Blanchard Junior