So I think your question is how to identify the wraps after you've made them. Is that right? One thing I've seen mentioned around these parts (KH) is that you can identify a wrap because it looks like a little muffler (scarf type -- not the car type) around a stitch. It's true. (If you can't see the wrap unless you slip it, could it be that your wraps are a wee bit too tight? For me they are pretty easy to see one while the stitch is sitting on the needle.)
Another thing you can try is to mark the wrap with a safety pin after you make it. (I sort of got this idea from a Japanese short row technique, but why not use it here too?) Speaking of Japanese short rows, you might find this
helpful. Nona compares wrapped, yarn over, and Japanese. After trying the three types, I ended up liking the Japanese short rows the best (mainly for appearance; definitely not for efficiency because it does take longer). One note of advice, though... if you do try the Japanese, don't use split ring markers in lieu of safety pins. They will
fall off and you will be completely lost!
Oh yeah. Here's
another great resource I had bookmarked. Has tons of links, including the encroachment method which I also really like.