David - thanks.

PDQ - actually, part of my need for posting is that we have a condo
meeting this weekend, and I want to tell them what I am doing.
I was initially going to work with my neighbor (they are not a condo),
but that is just not feasable.
I am hoping that digging and placing pt wood next to the fence will be
approved. (assuming wood pieces could easily be removed).
I thought about railroad ties, but that was not ok with the condo.