Paul, I think that's a good idea, the arrows don't look that nice.
there could be other ways too, a sign in the side of the road like they have today on real tacks with 50, 100, 150, etc. (distance to the corner)
@ the end it is only something to tell the new guys I don't see the marks on my track I know where it is.
what about your cars, they need paint too...................
