...I have a spool of copper clad steel with a 55,000 lb tensile strength--Mig wire....
NOT a good choice for antenna wire. The copper coating is extremely thin and will corrode off very quickly.
(One friend put up a long wire and said it only worked well for foggy night.) The underlying steel is a
relatively poor conductor for RF due to hysteresis losses.
True CopperWeld(c) is 40% copper and 60% steel, and is a much better choice if you need strength.
But I'd also look at what caused the other antenna to fail: kinks and knots will be weak points, especially
soldered joints in stranded wire. If you strung it between two trees and didn't use a counterweight at
one end or otherwise allow for the trees to sway in the wind, you need to fix that rather than just using