I've been reading about these and am intrigued.

These antennas are often mounted in a sloping configuration, but how
steep can the angle be? I'm sure the steepness of the angle is going to
effect the antenna's radiation pattern, but will how? Does it cause the
antenna to become highly directional as the angle increases?

How do these antennas perform in relatively noisy environments? I've
read that they're relatively slow to pick up local noise, but I'd like
to hear about some people's first hand experiences with them.

Are these antennas inevitably eyesores to those philistines who don't
appreciate the beauty of a good antenna? Is there a way to make them
less conspicuous?

Thanks,

Steve