I find your post fascinating.

I agree with gord on the ruling but most of all I agree that having the driving range as a hazard rather than OB is very strange.

You seem to imply that there is no significant barrier and the players ball can freely enter and exit the range. What gets me is are your local guys so accurate on the driving range that their balls don't go on the course? If there is a mess of balls in the "hazard" why isn't there a mess of balls on the edge of the course? D