RE: determining draw length
Arthur, I would tend to agree with you except that how does a newbie, who knows pretty much nothing, know when he has walked into a shop and gotten measured correctly? There are a lot of people walking around with bows that draw 2-3" too long for them that have come out of pro-shops. I think this is why I stress the wingspan method so much. At least a person can do this to determine something pretty close, then go to a shop and see how good they are.
Another thing that a lot of shops don't do is actually measure the drawlength of the bow. Suppose a guy measures by the wingspan method and it calls for a 29" draw. He goes to a shop and grabs a bow marked 29" and draws it to some sort of anchor. The bow may actually draw closer to 30" and nobody pays too much attention to this ( the shop person, and the buyer may not know) and adjusts the person's anchor. They just let him draw the bow. Then he leaves the shop happy as a lark with a bow that is already too long. Then the rigging creeps over time till it's settled in and now he's drawing 2" too long. Who can the guy trust?