how do i spot the most prominent freq of that sound is it were the sound peaks?
I agree that there's usually too much freq information dancing around in front of your eyes to make any sense of it in real time, so another option is to view it statically (time on x axis, freq on y axis), and even make your changes statically.

Adobe audition -> open waveform you're interested in -> hit "spectral view" icon and zoom in on the pretty colours. As well as finding out for sure what the frequencies are doing so you can apply a conventional EQ and work out a precise freq and Q for what you want to do, you can do static EQ in there too with the marquee tool and then use of the Amplify/Fade effect.