Step 4 is the dragging and brushing of the sand. Once the sand has dried on the surface of the greens, we pull a mechanical drag brush behind a small turf vehicle. Typically, we'll make two passes over each green with this unit attempting to work the sand into the hole. This can be quite stressful to the turf so after a few passes, we stop with the drag brush and go to our hand brooms to do the finish work. Getting the sand right is the most time consuming process of the aerification and is critical to the over-all success of the project. Over the next few days, we will go back on some of the greens to add sand to some greens to completely fill the holes.