This is a difficult area on which to comment. I've been reluctant to unilaterally advise races to get their courses certified because I don't have the energy to follow up on all the measuring that might result.
In Columbus there are not a lot of measurers and I do most of what's done.
We had a case several years ago when a hard-charging measurer invaded another measurer's area and used high-pressure tactics to convince people that the other measurer was inept, which was untrue. This was seen as egregious bad manners, but nothing formal resulted, except a tarnishing of the invader's reputation.
We have a good product, and I believe it sells itself. It is seen to have value. That said, I have no problem with anyone coming to Columbus and measuring away. Have at it!
Because I'm first and foremost a certifier, when people contact me for a measurement I first advise them to consider doing it themselves, and I offer to advise and help with everything except my butt on the seat. Some do, and this makes me glad. Most do not, to my regret.