Well, I could see you posting that as a counter to my post except for a few things:
1. The drawing on A:01:04 does not put it there -- ?your? estimation does.
2. Your estimation is irrelevant because you estimated to the top instead of the bottom,
3. not to mention, some bumpers are not as tall as others. (A Caddy's comes to mind.)
4. I was contributing something useful by suggesting an angle not mentioned and
5. giving an example calling for a maximum (I even capitalized it for you!),
6. which complements YOUR theory!!!
If I was wanting to "Try", there was already quite a bit posted here -- let's not go there..
Now, can't we all just get along and love D's!?