Yea, watch who you hire! This year I had a guy I trained. I tapped, explained and gave every bit of info for about 45 minutes while he watched, (I was actually training 2). Then I watched while they tapped for about 30 minutes and pointed out things to improve as they did. I stated that proper tapping is far more important than speed. The next day I discovered one of them started drilling angled down as soon as left alone, on some 2 stem trees with 1 drop he drilled the 4-5" stem rather than the 14-18" stem. On one 3 stem cluster, with 2 drops he drilled both into a 4" stem and none into the 12" nor 14" stems. Needless to say, he was history.
I just wonder if someone from Vermont sent him to screw up my bush, HA!
Over the years I have had several help tap, he was by far the worst. Most were good, 2 were exceptionally good.