They can stick those stupid V bars where the sun doesn't shine. Bloody orrible things which I found more of a hinderance than a help. I found the crossbars to be far more accurate; no estimating exactly where to put the aircraft symbol on the V, just get the bars crossed in the box. It's funny, but I've found the V bar advocates all hark back to the 'old days', the same sort that shun any automation or helpful gizmos. Why make life more difficult than it has to be