Yep this is what I'd recommend.
The dipstick is a very bad design, but I really don't understand how so many people have trouble reading it.
- As on any car, park on a level surface.
- Do it when the engine is cold so the oil has settled and is at its thickest.
- Pull the dipstick out in one move, without turning it.
- Once out, quickly read the level.
- Its a lot easier if once its out you flip it over and read the level on the back of the stick.
If your struggling to see the level its probably not right, i.e too high or too low.
As Dan said, do not leave it months without checking it. Personally every week, or before any long journey.
Not sure I would put tip-ex on it for fear of it coming off in the oil Heat/oil resistant paint ...maybe.