A line on the ground will disappear faster than "flags" above it due to the "curvature of the earth".
Hey, Sofa, I don't want to hijack your thread, but I assume Stan Back's comment was in reference to my wishing we had a center line painted on the salt. I just wanted to let Stan know that at Loring, Maine, there is the remnant of an old white center line painted on the asphalt runway. It is
exactly what I use to maintain my position on the track relative to the side markers and it
does not disappear due to the curvature of the earth (maybe the earth at Loring is
flat!). I've never had the pleasure of such a line as they used to paint on the salt, maybe due to the cost of doing so, so I can't comment on that. What I can verify is that the little red flags we had last year at BMST definitely disappear when one has his head down low and is just past one set looking for the next. I've never had the pleasure of driving a roadster on the salt, either.
Tom