Try focusing the eyepiece. Sometimes depending on how far away you are from the flag, and objects behind the flag when attempting to laser the flag, it may take a couple of attempts since the Z80 does not have the vibration indicator when the flag is locked on like the Approach Z82 has.
For me, I find that it takes me a couple of times to laser the flag if the wind happens to be blowing, and there are trees moving behind the view of the flag when lasering.
