Has anybody ever actually made one of these? I don't actually care what the speed of my greens are (our pro said that at their fastest this year-the fastest I've ever seen them-they might have been an 8.5, but even at that speed we have 5 greens so sloped that it made much of the green unplayable), but I'm extremely curious if they run anything near similarly from one to another. I'm convinced there's up to 30+% difference b/w some of them. And while I'm sure the Cove Moulding meter wouldn't give a same result as an official one, it would still be consistent so I'm considering trying it.