there is a couple heli hacks from my perspective.. when I spectated a few of these guys I see common flight style.. which is uncommon.. fox, sado, me, ghost, etc.. non of us fly the same. When hit with an AA mine.. they don't get disrupted.. seems to be able to continue onto target.. I can't.. not for about 2-3 seconds. When they are shooting.. they don't miss really .. they don't fire unless on target or damn close.. and almost like they purposely stay off target at times and when cross hair move over the guns start.. not before. I start and work the hits over the target.. not cross hairs and then fire.. stats won't show that stuff..
Stingers do leave a trail and I often wait for them to fire.. use them as a target trail for me. But these guys aren't doing it quite like that.