Heh, sounds like you have some bad accuracy. A person aiming through a hole can only hit one person at a time, because the only reason he is using a hole is for isolating one opposing player across the field.
I played a tournament saturday and found a bunker with a crack in it. I had so much time to setup that I acted like a sniper going prone (even did the breathing rythm). I took out the back players and since it was only a 3 man competition my teamates wrapped it up( Striker owns).
But after I finished the game I saw a copycat doing the same thing. But this time he got blasted by a ton of paint by the fast, agile linerusher on the renegades team (that we had to give up 1st place to
. The difference was that the hole shooter just got compromised by the people on the opposite team moving up to get a more accurate shot.