The 88' EDZ (Extended Double Zepp) antenna that I made out of zip cord for the Flight of the Bumblebees worked well enough that I have added it to my portable antenna arsenal. It loaded easily using my Emtech ZM-2 antenna tuner. It was so simple to make and took all of about maybe 15 minutes.
I made mine from a 75 foot roll of 24 gauge Radio Shack speaker wire. I took the roll in the backyard and using my 100 foot tape measure, I determined where the 44 foot point was from the end of the roll. I marked this point with a very small tie wrap. The purpose of the tie wrap is to prevent the wire from splitting past the 44 foot point when you make the "legs" of the doublet. You could simply mark the wire at this point, split the legs and tie a knot with the legs at this point and achieve the same effect. I chose to do it this way, and right behind the first tie wrap, I put a second, not only as a reinforcement; but also to hold a fishing swivel which serves as a center support "hanger". The rest of the roll becomes the feedline. At the end of each leg I also tie wrapped another swivel to serve as insulator/"rope" supports. At the radio end, I bared about an inch worth of wire and tinned it with solder. This goes through the holes of the binding posts of the ZM-2 quite nicely.
Now let's face it, this antenna will be used for outdoor QRP contests; or for times when I will be operating outdoors for at least a couple of hours. Using the crappie pole as a center support; or finding at least one tree as a center support is not for those "lunch hour" sessions when time is of the essence. For times like these the Buddistick, PAC-12 or Hamsticks on the car roof are a better option. But in my mind, if you have the luxury of time on your side; then nothing beats a wire dipole/doublet up as high as you can possibly get it.
The beauty of the Zip Cord 88 as I will call it from here on, is that it is cheap, it's easy to make; and it's VERY light. And you won't have a heart attack if something should happen to it (forget it and leave it behind, etc.).
In the near future, I will try to take some pictures of the construction and will add them to the "Portable Ops" page of my Website.
73 de Larry W2LJ