David says that a fencing nail - sort of a u-shaped thing - was used to hold the bottom down - and that he sort of 'hooked' the top end to the cross bar of the post. I didn't put it up - or watch the process -
Apparently a squirrel will only touch it once or twice and decide it isn't any fun at all to even try to climb on the post anymore.
Moved the feeder away from the guard rail of the deck so they can't do the flying leap anymore, either.