Topband: Sloping full wave pentagon loop

[Chuck Gerarden]

I have a ham shack near the top of a mountain. I recently hung a 
pentagon FW loop from the top of a 55 foot tower. The base is about 12 
feet off the ground. the ground slopes away from the tower at about 20 
degrees and the legs of the loop appears to come off the tower at about 
45 degrees.  Terrain to the West, North, and East slopes down from there 
at about 25 degrees for about 5 miles. I don't know how to model this 
but can anyone tell me what kind of 160 performance I could expect? I 
know a horizontal loop makes a good NVIS radiator, but with the sloping 
ground and sloping wire. will I get a medium TO angle?

Thanks

Chuck
W0DLE