This may not really belong in this thread, but I think it's vaguely pertinent on the theme of flight planning. There seems to be an increase in cross-channel traffic nowadays that seems to be unaware of the gliding site at Waldershare Park. Today's best examples were lucky they were spotted and launches delayed.
I get a tad concerned, when I'm trying to be conspicuous (in a yellow glider - and gliders do tend to turn more than most..), when an a/c crosses the field below launch height and closer to me than is comfortable. It would be more comfortable if I had any indication that the driver inside gave any indication that he knew I/we were there.
I'm not brave enough to mutter anything about GPS maps v. paper charts...