I have been around these some but never gave it much thought since I have been doing it the old string and stake way. Now that I will be using a laser this year do most of you leave the laser on all the time while your cutting your grade? Reason I ask is because I know it says not to look directly at the beam. I was going to try to leave the laser lower or higher than me sitting inside the skid steer. I guess what Im asking is how concerned should I be about the light when the laser is a good 25' or more away. I love my eyes.