I used this to do my whole basement by myself. What a life saver.  I could never have done it alone and even with the help of two other people at my disposle, which I didn't have, wouldn't have been as convenient as using this wonderful invention. With the ressesed cans for lighting in the basement I just cranked up a 4 by 8 by 1/2 inch thick sheet tight to the cans and used a rotozip with a bit designed to ride along the outside edge of the can or outlet box, and buzzed the wholes out then cranked the rock up the last inch and screwed it up tight.