Hmmm I agree that it's not always the best tool to rely on certain situations, especially when trying to find your target in a group wherein there are two or more of them because even if you managed to get lucky killing one of them without skills, you'll probably still get stunned. It's not perfect I guess. But then again, if it was then I don't think manhunt or any other team matches wouldn't be really that fun :P. I haven't been able to try it out a lot recently because of my crazy slow internet lol.
Btw, I'm sorry I don't have a video posted up showing off this trick but I don't think it's really needed. For some I guess it's a bit hard to imagine actual scenarios by just reading what's here. Just try out some manhunts and I'm sure you'll be able to find some ways to use it.
Best Compass trick - line of sight.