I've been having really, really good luck with VocalSync lately, but I discovered something that helps make that happen (although it's probably so obvious everybody already thought of it except me...). It makes a big difference to zoom in on the clip being processed so the graphics aren't all scrunched up. The optimum knob setting isn't always predictable - sometimes it's at 15%, sometimes 100% -  so you need to look closely at the graphic representation to see which setting causes the closest correlation between the two waveforms.
 
This also makes it easy to see if most of it lines up, but one section resists. If you split the clip at the dividing line between those two sections and apply VocalSync to each clip, then you can get things to line up well.
 
Anyway, the more I use VocalSync, the more I'm getting into it. It can really tighten vocals up nicely. I was working on a piece last night with four vocals lines, and VocalSync gave them a very strong focus.
 
 

Nice:) I have not thought of it like this. Have to try this on a song I have, with a lot of vocal parts that I cannot seem to get to fit together.

Anderton
If you split the clip at the dividing line between those two sections and apply VocalSync to each clip, then you can get things to line up well. 

 
I had also noticed that the "Sync" seems to happen at different percentages.  At first I thought that 100% would be full on sync and a lesser percentage was looser.  As you have noted, the visual seems to help.  Craig, your quote above...I had not thought of this, even though now it seems VERY obvious.  I will try that on my next project.  
 

michaelhanson
I had also noticed that the "Sync" seems to happen at different percentages.  At first I thought that 100% would be full on sync and a lesser percentage was looser.

 
When I first tried VocalSync, it had a percentage calibration and I thought it was broken because the performance often worsened as I turned it up. When I found out the "sweet spot" could be anywhere along the dial, I recommended eliminating the calibration and Cakewalk saw the logic in that.
 

Craig, your quote above...I had not thought of this, even though now it seems VERY obvious.  I will try that on my next project.

 
My father once said I had "a magnificent grasp of the obvious"   I think that was supposed to be a compliment...
 

Anderton
My father once said I had "a magnificent grasp of the obvious"   I think that was supposed to be a compliment...

Great tip! I really had my issues with vocal sync. Your suggestions finally took me to a good result! Thank you very much :D

I really love VocalSync!  In my opinion, it is one of the best features in Sonar.  Getting double tracked vocals to line up is now easy.  I used to spend hours re-recording vocals or trying to use AudioSnap to make adjustments.  With VocalSync I can tighten things up in a snap.

Mack
I really love VocalSync!  In my opinion, it is one of the best features in Sonar.

it took me a while to get the hang of it, but now I've really come to appreciate what it can do. It also helps explain why ARA integration is a big deal.

Ditto...  I probably used VocalSync a dozen times in my last project, and in all but one case the results were good and easy.   That one case just required a little more finesse.  
 
So yeah, I agree it's one of Platinum's star features, at least if you need this type of thing.  
 

stevec
So yeah, I agree it's one of Platinum's star features, at least if you need this type of thing.  

I've found you don't want to use it all the time, that's for sure. Super-tight anything can get boring after a while. But when going from, for example, a verse with fairly "loose" vocals into a chorus, VocalSync can "focus" that chorus and make it that much more dramatic a contrast.