A:
it is heavy duty & reliable (as long as the raccoons don't foul up the spinning plate)
the feeder comes with a heavy duty metal ring that mounts to a post (corner of a dock)...the feeder sits inside the metal ring and the ring is closed with a heavy duty bolt (with locking nut and washer)...
I did have someone steal my feeder by unscrewing the nut that holds the metal ring around the feeder...they have to really want the feeder, but it can be stolen...but then again, it is a $150 and not $400+, so a pain in the rear but not the end of the world to take a chance on...