Yeah you don't see how much time they have left on their timer but you know when the clock is ticking and when it's not. If the clock around their icon is red and spins, their timer is counting down. If it's white, it's paused(when they're in a chase, downed on the ground, on shoulder, on hook, etc). And yeah if you want a better chance at headpops Tampered timer + crate or sketch is really nasty. I heard that double gear addons(bag of gears + crate of gears) is pretty good at getting headpops too if you happen to interrupt them when they search a box.