Plug in to use while manually adjusting vocal gain

Hey all, I am looking for a plugin that I can use to scan a section of a vocal track and give me the RMS of the section. 
 
I am manually gain editing the vocal track (boosting and cutting) words that are either getting lost and or too loud. I know this is looked at as a job for the compressors, or automation and I intend to use those tools but right now I am taking care of problems I can see or hear before hand so I don't have to be as heavy handed o with processing. 
 
Back in the day Sound Forge had a tool that you could analyze a section and it would give you the RMS, that would be so handy for this kind of thing. Is there something Cakewalk already has that I am missing?

Wave Lab has a Global Analyzer that does what your asking. But I don't use it on tracks, just full mixes. 
 
I can tool copy the track into Wave Lab. I often do this to vocal tracks where there were re takes and the singer moved around, so each take is a different level. Also, as you say, a lot of singers lose power on say, lower notes so they need a little boost. 
 
I can use my ears ( and eyes)  for most of this and the end result is a much improved vocal track that you can understand each word.