Which would be better to say "like a hawk" or "with eagle eyes"?

[ragan]

I wonder which usage is correct.
Do I have to use "like a hawk" or would it be better to say "with eagle eyes"?
Or are both of these two sentences correct?

He was watching her like a hawk.
He was watching her with eagle eyes.

 

[emsr2d2]

Re: Which would be better to say "like a hawk" or "with eagle eyes"?

I would use the first. We use "eagle-eyed" as an adjective but "with eagle eyes" isn't usually used in the way you tried to.