All I can do is tell you how many cute boys there are along with my read of the situation.
Confirming their availability as you suggest would be futile, as just because a boy is available to one person doesn't necessarily mean he'd be available to someone else. That would rely solely on your own efforts and skills...not those of someone else. This is where boy-hunting on the apps has its greatest advantage.
Here's a hypothetical:
If I said I've been hit on by 3 cute gay boys during the past 5 days in Buriram - and then you come to Buriram and strike out, would that mean there's poor availability in Buriram, or good availability?
Do you get my drift?