No, sorry for the confusion. I'm saying that using flavor extracts tastes like crap (brewed a raspberry wheat with some raspberry flavoring I got at the homebrew shop... tasted like ass). Adding POM juice at any time will restart fermentation, since its full of fermentable sugar. Even though the sugars will ferment out, the flavor will still come through. Adding it at bottling would probably be fine too, but you would have to calculate the correct amount to use, and replace your priming sugar with the POM juice, and then you may not be able to add enough for the flavor to come through without some danger of bottle bombs (this is easy enough to do safely with POM juice, since the amount of sugars per serving is available on the bottle, just need to do some math, but I believe the amount required to prime 5 gals was WAY less than 48 oz).
Adding late in primary or racking to secondary are usually the best options when adding fruit from what I've read, If added during the boil, not enough flavor comes through, and if added at bottling, it's too tough to get the right amount without danger of overcarbing. I'm considering using POM juice instead of priming sugar when I make this again, in addition to the 48 oz (or so) i'll use if yours turns out well with that amount, I think that could turn out really nice. Let me know if that was still confusing, I'll give it another shot.