Voxframe is correct...crashed towers are NFG, for anything.
I'd suggest some new Rohn 45 or 55 for your training tower.
»www.texastowers.com/towers/guyed ··· n45g.htm
»www.texastowers.com/towers/guyed ··· n55g.htm
Insofar as this sounds like an atypical installation, I'd suggest some engineering consultation to make sure there isn't an 'accident'. --
Nothing makes an American want to do something more than telling them they can't.