It takes a while before posing becomes easy. Type "vcollide_wireframe 1" into the console to see where all a model's collisions are. Usually the chest or biggest collision(depends on what the model is) is the best place to grab a model.
i don't know if you've heard of it before, but there's a level on HALO: Reach (i think it's Sword Base, beneath the last flight of stairs) where there is a son-of-a-glitch elite. armor type changes every time, but there's always these traits to it: 1)it's armor is always white 2) it carries a (rapid-fire?) concussion rifle as a weapon 3) it has 2x shields AND health. it took me unloading the shotgun in it's face at point-blank range just to break it's shields. i tell you, it's not a fun guy to mess with.
I found a way to kill the mofo, have to say I have no idea how I did considering I was doing it on Legendary with Thunderstorm, Tilt, Tough Luck, Cowbell, IWHBYD, and the Birthday skulls on. I had to lure my NPC team mates and my co-op players in to distract him and I barely managed to assassinate him. I wanted a damn achievement for that.
I almost did it LASO but he kinda decided "Oh well hey there poor innocent fucktwat, you're life is about to seriously take a horrific turn for the worst! " He then proceeded to stomp my ass out. Never try it alone when doing the LASO and he's a Field Marshall, the feelings of regret shall wash over you like the waves of blood that shall be drop kicked out like the teeth that are in your face.