[Radioroslyn]

Copper plated steel antenna wire is the best of both worlds. Strong as steel and not as expensive as copper. Copper has a tendency to stretch . General speaking its pretty soft stuff.
http://www.thewireman.com/antennap.html
Take a look. If you've got some tall trees get a sling shot, 1/4" rope(not closeline) a bunch of heavy thread and an old lug nut. Tie the thread onto the nut. Use the sling shot to propel the nut and thread over the tree. Tie the other end of the thread to the 1/4" rope. Pull the thread until you get to the rope.Tie rope to tree. Other end of the rope tie to your insulator. Your insulator can be a homemade job. A piece of small diameter pvc pipe with two hole drilled one near each end will work fine. At the other end of the insulator fold over and twist about a foot of your wire. Repeat for the other end of the antenna. Solder a covered piece wire to the antenna wire and use it to connect to your radio. Remember the higher the longer and the clearer (away from other things)the better it will work.
Terry