Brickman has used some for the past 2 years on their ZTR's. Just had a prototype returned here yesterday (season is over) that was being tested for stand on mowers. He loved it, and wished he had more leaf customers to keep using it on. Claims to have at least doubled his productivity. Looking for a 2014 summer intro for a stand on mower version.
Let me know if you have any questions or problems.
Drew Coates, AKA Mr. Force