Big Fish,
Sorry if I jumped down your throat. Over-reaction!
We started with the markings at about the same time as you. With us they are rigidly observed.
I don't know, but I heard that the RNLN Lynx ground-running accident last year was possibly attributable to the cyclic markings not being used????????Does anyone know for sure.
Till anyone comes up with a better idea, I stand by my original comments regarding the advisability of using the marks.