I need some help or suggestions with large commercial size applications. We currently use the Perma Green machines. A few of these on a site can make decent time yet are a pain with spraying (small tank). I have read the posts on the Z spray and it looks interesting, yet I am not ready now to drop another 7K. We do own a small JD tractor that we can rig with a vicon spreader but then spraying is a problem. Please help. How do you all do it? Liquid? Granular? Tractor set up? Thanks.