Not really that big a deal since your motion tracker goes haywire every time there's somebody with active camo nearby. The general direction of the swarm of dots will tell you what direction they're in, and from there, it's just a matter of keeping your eyes peeled. I was going to one-shot a non-moving cloaked guy with my shotgun last night, and just as I pulled the trigger, my friend ran in front of me, so I ended up one-shotting him instead, and the cloaked guy promptly decloaked and unloaded on my face.