Well, after all the googleing and asking folks I ambgoing to resort to prayer...
I think I will try the brush hog again but use the neighbors bigger tractor. Then rock salt. I want it dead. Then get the topsoil out and spread road bed. It'll be good parking for the shop and boats. Or for wood piles. Being that I hate lawns and the upkeep of them. This is all on the "shop side" of the property. I think I jinxed myself. It seems they took off when I agreed to store a couple sailboats.(Just joshing, am a wrench turner you know).
I was just wishing for a less work type of scenario. I wish I had started assaulting them 20 years ago. It's just that they kind of stayed put for 17 years and were not a problem. Then all of the sudden, Boom, the patch tripled.
My neighbor loves them, they are always down here picking the darn berries.