[TowerTalk] 40 Wire Antennas for a City Lot?

[Eric Rosenberg]

I need advice for a 40m wire antenna in my 40ft/12m (E/W) x 144ft/44m
(N/S) city lot, bordered by power and telco lines along the western side. 

At the moment, I'm using an 80/40 Off Center Fed dipole (made by
Fritzel), and for contesting it is, well.. mediocre!  Adding a rotatable
dipole element to my roof-mounted C3-SS is, for the time being, a
non-starter. I have a 160 inverted-L with 26 radials. 

Thoughts, comments, suggestions?

Thanks in advance! 

73, 
Eric W3DQ 
Washington, DC