I have an 18 Elect/Ice blaster and 18 Rad/Dark defender that I play occasionally. When I get an even-con door mish, I always spare a few minutes toying with the fine art of pulling. (Mostly I fail, but I'm learning a lot in my experimentation.)
The one conclusion that I've realized is this: Even if you follow the advice as given above, Snipe powers seem to have only a 50/50 chance to single-pull a target. Both my defender and blaster had their snipe power for many levels, and even though I'll snipe a baddie from 100+ yards away and quickly duck around a corner, 50% of the time ALL the mobs come running.
when I get a chance, I'm going to copy over to the Test server and load up my lvl 1 blaster power (Charged Bolts) with two accuracy and 4 Range increase DOs. It's my weakest ranged attack power. I'll see if there's any change which using that blast power as opposed to my snipe.
Also, I'm getting quite good at pulling as a Scrapper. I've become a good judge of distance. I'll get my Spine/Regen scrapper to within 60 yards of the closest mob, and just wait. Within a few seconds, he'll turn to face me. Usually there's anywhere from 1 - 10 second pause where the mob is thinking "hey, is that a hero is see over yonder?" Eventually he'll whip out his pistol and take a shot. As soon as I see him reach for his gun I back peddle. I have to take that first shot of course. But that mob now has to come running after me, seperating himself from the group. Just back peddle a safe distance from the whole group and engage the mob alone.
Even better, sometimes he'll bring one two of his friends. I can handle 3 minions at once no problem. And now that scary group is 3 minions less to deal with. So far, I havn't encountered a case where the whole group comes ... just 3 at most.
