Santa ... be afraid, be VERY afraid! At this year's MDRA Christmas Tree launch, we kicked it up a notch by drag racing 'em. Note that the rightmost tree in the big race had its motor mounted on the "wrong end", to optimize the tree's drag profile (make the branches bend back towards the trunk instead of further out in the slipstream). Judge for yourself how effective this strategy was. I wonder if the trees would all corkscrew counterclockwise if we launched 'em in the Southern Hemisphere...