When your first post is trying to pick an argument, instead of introducing yourself in the welcome wagon like most normal members, yeah, maybe I am defensive. When it comes to camshaft timing, I choose not to "eyeball".The 5° measurement is worst cast. I have no cherry to break and you're coming across pretty defensive. I'm just pointing out that you can eyeball it and have results that are 99.6% as accurate as a $$$ tool.
So yeah if you can't eyeball 5° (or better) then get a tool that will do it for you.