Why do you single out only Pro's? I've seen level 50+ hacks before. Tons of such cases
I'm a level 58 pro and I have all starter clubs, 75.5 average
but now each match my average barely goes down, so to drop the last 3.5 points, I may have to upgrade to clubs. I'm not going to upgrade until I get into those 70 and 80s levels.
You can't JUST look at levels and say 'upgrade them', clubs are important to look at too. If you had someone level 85 and all nice upgraded clubs then sure, I could understand the problem, but you didn't mention clubs.
They may as well just have admins look into stuff like that. i played with a guy whose optional clubs were "starter hybrid starter hybrid ez swing sand wedge sand wedge ez swing lob wedge"
... obviously he was up to something.