I just got this new commerical account. It is a local rehab hospital. My wife works there and told me the old guy that used to mow took only three hours to do. He had three men and I have three men. However it takes me almost 4 1/2 hrs to do. It is a pretty large property. Any ideas on how I can cut down on my time? I have a Gravely 36" wb with sulky , a 21" ariens wb, a stihl fs85 edger, and a cub cadet commerical trimmer. Thanks for your help. I really am happy I found this site. It has been very informative.