Don,

POV concerns drive most writers crazy; maybe just the unpublished ones. I love a tight POV dealing with the most sigficant character in the scene but, if the situation shifts significantly within that scene, I'm forced to take a line break and get inside another's head.

That said, given a fight scene, let's say, with maybe three major characters, a decision needs to made to either go omnicient or take frequent line breaks to define the close or tight POV shifts. I find it best to do it in both fashions at first, then wait a week or so before assessing the result. It's usually obvious.

It's only easier once you're published, I think. Let me know.

Ray