[quote]rich44 wrote:
I love skullcrushers. Along with weighted dips they are the only isolation work I do for triceps. I always use an EZ bar to take strain off the wrists, and I do them on a flat bench. I use Arnold’s variation of them from his MGTB book. This helps to isolate the triceps better. [/quote]
I do mine following Arnie’s Bodybuilding Encyclopedia: hang your head off the edge of the bench for more range of motion. Is that also how it’s outlined in MGTB? What does MGTB stand for, anyway? 
I also wear a baseball cap when I do them so I will be forced to land the bar on the top of my head instead of my forehead, which forces my tris to be higher and isolating them more.
My only beef with skullcrushers (I usually call them Frenches, because that’s what Muscle and Fitness calls it and we all know that M&F is the ultimate muscle-building authority :-P) is that it doesn’t have enough range of motion to make it the ultimate tricep exercise. I find that close-grips and dips worked the best for me.
For those of you who can’t do the movement due to your elbows, don’t feel bad, I think that we all have one movement or area of our body that gets injured when it is trained no matter how much rest we use. For me it’s my traps. I ALWAYS injure them so it has reached the point where I can only do one set of heavy shrugs.