Cleworthy: So, my question is - do I have to chart my clubs, diagram the greens, make graphs, etc, etc to have any chance of making Legendary status?
Of course not, but taking notes doesn't hurt. I, for one, have a hard time remembering what I had for breakfast, so notes are essential for me. If what you are doing works for you, then by all means, stick with it. The courses will let you know when it's time to upgrade your equipment.
Cleworthy: I certainly don't use any performance enhancing drugs
As far as that goes, you may want to ask Strange Magic. They seem to be working just fine for him. Look at how he's dressed! If that doesn't get you ready to play STA, nothing will. LOL. Just having some fun there SM, you look fine, or funny.
Have a nice day.