Yes teamwork. You honestly can't expect cloaking can be easy to predict with or without teamwork. Why? Because most players will be too focused on defending or ACTUAL strategy that a cloaked scout are unpredictable that it's difficult to have just one or a few guys stand around looking for scouts. Even with detector mods you will still have difficulties actually finding the guy. Cloaking from my point-of-view is used as a "Troll" rather than an actual tactic; but most cloaked users are too self centered thinking it's a weak equipment and there are different ways to counter it.
For example. This thread.

It sounds like you are afraid to get hit by the nerf bat

I m not afraid of the nerf Bat it is just that I m Tired of receiving hatemails because I use a scout with cloak (I run a minscout!! How can you Consider it op???).

@Adell I dont know how you play but I dont have to stand around to see things on the battlefield, if the scout approaches you from the back in the Middle of a gun fight what helped him doing so? His cloak or his play Style? Would you be able to see him when he comes from your back, cloaked or not?

I agree that this situation where scouts hp and profile are over the top is problematic. In my opinion making the scout suffer les agility and less speed and more noticeble to scanners while using armor plates would disencourage brick tanking scouts.

"How to play"
I guess there is suppose to be an exact way to play with everyone being open to their own tactics, while cloaking scouts can run freely in close-range space with shotguns near objective? I guess if we spend time forgetting about objective and killing cloaking scouts, they will probably say to themselves "Hey, I think we should stop cloaking"

Can you plz quote the part where I said that I m" so great at designing a balanced game"? It make it look like I dont Like the Job that ccp is doing but the problem is.... I actually love what they are doing!

It is not that I dont Like the environment it is just that I dont Like QQs.

Can you plz stay on Topic instead of just try to insult me? Thank you very much

Who are you calling self-centered? Seeing soo much QQ from you about cloaks in every post actually motivated me to view all of your posts. I challenge anyone to do the same. You repeatedly stroke your own ego, talk down to others, make ridiculous claims like how your LAV is always getting hit by 3 heavies at once whenever you call it in, or how your so godlike in your LAV driving lol. Dude go on somewhere! Your obvious exaggerations and narcissistic attitude betray the real issue, your mad your crutch got taken away. Your elevated opinion of your own "godlike skills", (your words not mine), means you simply cannot comprehend that anyone could beat you in a fair fight.

Go ahead and call me a liar, the proof is in your posts. All one must do to verify it is to click on your name and check it out themselves. The pattern practically leaps off the screen.

Go play the game, or better yet don't. Your constant vitriol towards anyone that has a differing opinion is tiring. Taken from your own words, "90% of the time I am killed while hacking by someone cloaked", I cleaned it up a bit but that's the statement. Basically this shows everything I said to be true: 1) lack of facts, what does a cloak have to do with getting shot in the back while hacking? 2) Others find you equally annoying, hence why you have no team members to watch your back while you hack.

Why is a "godlike LAV driver", trying to hack objectives? Do you even check the objective first? <-Rhetorical Questions btw

Here I disagree with you. Teamwork is king - there's no doubt. But there has to be a place for the solo player and that ties in with the NPE issue and keeping hold of casual players. In fairness - scouts are the solo player experience.

Not "QQ" about anything. I point out different counters about the Op's "strategy" to counter cloaking, but most people automatically think I'm getting killed by cloakers everyday.
Most of my post get taken the wrong way by people who I am arguing with (Even posts where I'm making a joke.) Most of my time playing is either driving an LAV or snipping. I rarely have any actual encounters with cloaking scouts. The whole "90% I die" was when I jump in to assist hack or hacking something to give my team an advantage while driving.

I would also like to add I use cloaking in few occasions as a tactical way to get closer to objective rather than use it for kills....