First I am not trying to get into a t3000 vs z-spray debate here. So I am thinking about buying one of the Z spray machines. However I really like the tri pod aerator they sell w/ the floating aerator. They have an add on kit for spreading fert and a spray set up. I am wondering if anyone has one? How is it on hills? I realize that a dedicated unit probably would work better, but I do a lot of aerating and overseeding late summer. I am kind of hoping that I could do a lot of fert and squirt w/ the 3 wheel unit, yet have it for aerations as well. I would appreciate any feedback.