I cant spot one to save my life, so i wanted to now if any one could me figure out how.
My guess is that it might be the same way that they may have a hard time noticing you. I think the answer is in your own behavior and attitude.
However, if for some reason you're looking to be friends, or having an active JW with whom you can really talk, I'm not sure that might work.
First, there are people here who have been out of the JWs for decades and still behave like they just left this afternoon. Some people never let go even to their own detriment.
Second, some people might be experiencing a crisis, and even though they might be awake, they might not be in a place where they can even talk about it, leave alone admitting it to another person. Remember, some people think that they are going to die because of waking up. That's no small thing.
Third, a lot of the support that (in my humble opinion) we need is outside the WT and the congregation, and as away from the JWs as possible. You can get quality help and real education outside the congregation.
Fourth, people change their minds. Some people wake up but it's too difficult for them to deal with it and rather convince themselves to stay, which means that they will tell on you as a way of reaffirming their commitment to that organization.
Fifth, it's actually more on the fourth and first, I have encountered JWs and ex-JW people outside the JW setting (like in a company event, a bar, or a park where gay men go to have anonymous sex). Even under those circumstances they still didn't even want to acknowledge me (one of them was to busy to do so, anyway). The negative influence of that organization is very strong in many individuals.
Sixth, a lot of people survive being in that organization by putting up a big show about themselves and who they really are (elders, anyone?). If you are still interested in spotting those people, you will have to start to get a lot closer to them, and if you are PIMO, will that be to your best interest?