Don, yes and WATCH and GUIDE those subs to protect our beautiful, intact Timbers! Show them and insist they go around instead of drilling through timberframes. Young, strong, gung-ho apprentices are often given drilling duties - you know the same ones who don't know about leverege, balance, pacing themselves, nor their own strength - often break tool handles or bury their vehicle to its axles in mud!
I found it best to work w the same subs, who could learn some new SOPs re TFs.
Steve