Stalling is just a difficult in wrestling as the block/charge in basketball!!!

I hate to say it, but it's all in the judgment of the ref. I try to keep it consistent, but I never keep coaches, spectators or critics happy.

Sometimes, there are things happening (hand fighting in the ref's position for ex.) that prevent me from calling it stalling. On the feet, it's very difficult to determine if the red is stalling or trying to set green up something up...or is he just trying to making it look like he's setting something up?

Signs I look for: clock watching, looking to the corner "too much" (although this is ambiguous...), being overpowered on bottom vs. not presenting themselves/working for a base.
I try to give the contestants a verbal before I hit one of them for stalling: "action" or "shots" on their feet - "work to improve" in ref's position. Don't know who I'm talking to, but they both get working or I hit the one who I think is stalling before I spoke.

It's not wrong for a coach or a captain to ask for the ref's personal definition of stalling during the pre-dual/pre-meet ritual. I get the question from time-to-time. My answer? Keep working constantly and you won't have to worry...

I cannot and do not speak for my fellow refs, but this is my viewpoint and opinion...