The Trylon specs call for a base of about 5.5' by 5.5' wide and 6ft deep, with a 'bell' at the bottom about 7.5ft wide, and they call for 7.0 cubic yards of concrete! (much more on that later).

That's my house to the right... and our property line ends where that white fence starts on the left.

PHOTO 7: The digging!

I was lucky enough to have a friend of mine dig the hole with a small backhoe, and I paid an outfit $50 to haul the dirt out of the backyard.