How well do they work? I saw Norm Abram use one on his show one day and the laser line looked a kinda fuzzy to me. When I use a miter saw, I always lower the blade down with the saw off and line the pencil line up with the blade. Once I've determined that I got the pencil line where I want, then I squeeze the trigger and make the cut. I imagine with a laser, I wouldn't have to lower the blade down and do that dry run like I always do.