Removing the Floor

The last bit that I need to remove from the bathroom is the floor. Rather, the sort of vinyl top and plywood floor that's over the subfloor. This is a royal pain. Why? Screws! The vinyl (it's not really vinyl, but I don't know what it is) floor is covering the heads of the screws, so it was really hard to get up. In fact, I only took up half the floor. I used my circular saw to cut it into pieces and then had to pry the pieces off. This was really hard and my back is pretty sore. It's just proving to me how much better screws are at holding things than nails. Tomorrow, hopefully, the rest will come up and I'll be done gutting.