You can use Location to check if any rogues are in the same area ;D
Then look carefully if you see a Rogue in the area
If you dont see anything a rogue is on stealth and probably near you
The rest its up to how skilled both players are but im sure that i can trap Rogues very easy even with 1 lvl trap :lol:
Well im getting out of firstborn in a hour + and try to get 13 lvl then i go near Nadir for some fun xD