I can usually drill about 200/hour with the Mrs. following me driving in the cvs and tapping on the stubbies.Had a friend over the other day said he could easily outdo a woman,he would follow me and do the same job.After he left I found a number of trees where the cvs were not driven in or stubbies attached,so I will have to backtrack everywhere he helped with when it gets warm again before we turn the vaccuum on.Good of him to help,but i hate doing a job twice.