So today dad and I borrowed a second impact wrench when we realized how many screws we would have to put in. It was time consuming but after getting into a rhythm it went well. I would mark the lines and start the screws through the wood with the smaller impact wrench and then dad would come back through and finish them off with the more powerful one. When one of us got tired we switched or the other one took over. So now all the of the sub floor pieces of plywood are screwed in and the floor is square. We were done screwin around so we shut down for the day and had dinner and I did my homework. See you soon (hopefully some success comes our way tomorrow).