I dropped the 10m pole holding up the coax fed (via a 4:1UnUn) compromise antenna to the ground earlier today. It's now facing downhill and, in reality is about 6-12 inches off the ground.
Well, it works better on 40m than it did before, much lower noise, tunes fine and reports are great. I have used a LOG antenna for receive only in the past and found it a little disappointing, so this is a pleasant surprise.
I am going to run a full size 40m end fed along the fence and see if it's as good - I think Neal did this?