After watching the latest MTS I really liked those ACU pants. I am doing some coaching for a government agency and I think they would look good to train in and I think the people I'm training would dig them as well. They're available in masses at the goodwill because I live near an army base. I've used old bdu pants before, but they do rip in the crotch. Any alteration experts familiar with some ideas to reinforce the crotch so they can handle some serious rubber guard?