You make a really good point spinwing - I've never actually tracked one all the way down, my imagination actually kind of filled in the vague spots so I can tell you definitely .... that I wasn't quite positive it was "parabolic".
BTW - how come the firefighters don't hose down dusty LZ's? (or do they?)
Last edited by Runon; 10th Jan 2013 at 00:35.