Spot on amdweb. I use big charts and change the background colours to black with grids and it is much clearer. The advanced chart option does this I think better than the interactive charts option. . . .
If I find something I want to use as the basis for one of my rudimentary charts, I clip it out using skitch (a simple Mac screen capture program that can post to the web for HTML links etc) and punch out a few trendy speed angles and pitchforks. Dedicated TAs would ROFL but it gets me by.
I really like the duplicate feature for copying speed angles and seeing where they fit the chart. It really is amazing how many times they repeat.