I agree with lee in that it probably depends on the grass you are cutting. Up north in the cool season grasses like Bluegrass and Fine Fescue it will probably work just fine, but down here in the warm season grasses like Hybrid Bermuda it just seems to create an additional load on the mower without really any return on the investment. I included the pic to kinda show what we are talking about in the way of thick grass, it's very soft and enjoyable to walk on, but really a challenge for the mower.