Howard,
I'd like to try the Cobra - perhaps I can squeeze ten more feet in 
but my one hundred thirty something Carolina Windem works so well I 
hate to jinx it!!  Sadly changing antennaes is not as easy as changing socks!!
Pat, K9JAUAt 04:22 AM 9/30/2011, you wrote:
>Tom, the challenge is the open wire center fed zepp likes spaciffic lengths
>of laderline to work best.
>look at the ultra-lite,
>http://www.ultralite.com
>I hope that's right.
>The antenna is 140 feet long, but has wire looped in each element, so the
>total wire length is 420 feet.
>That is on the 160-10 meter version.
>I don't know what the antenna or it's balun will do on 6 meters.
>I keep thinking of trying it here, but I only have room for 1 antenna in my
>little city lot.  What if it doesn't work as well as what I have?
>I am using a 40 meter double extended zepp, fed with 96 feet of open wire.
>I need an external tuner on some bands, and oddly enough it's weakest band
>is 40 meters.  The problem is, is I hear it I work it.  Kozokstan last week
>on 20 cw.  I swing the ends back to make it fit in a 120 foot lot.