I would guess like you say cut a little higher than the "minimum" and cut often(using the "1/3 rule" ) but that's a problem for some especially if they're paying clients. Using the 1/3 rule is better on the grass, mower and the guy doing the cutting. As far as striping goes your talking to the wrong guy I don't like striping, never have I think it makes a residential lawn look ridiculous. It has its place like on athletic fields and such and it's fine but not on someones home but that's just my opinion. As far as the minimum heights are concerned my guess is they would be better to use on like Bermuda and such as that is what is used on ball fields and they strip the heck out of those, just guessing.