JaGWiRE wrote in post #2070078
Now I'm even more worried about getting this lens. I'm a short guy ( around 5 feet exactly) and relatively weak :\.
You can get used to it..
There was a time when I was a complete n00b, coming from point and shoot land, and I thought the 17-85 and 350D were chunky. Now, I can hold and fire those two with three fingers.
Today, I find the six-pound 300 f/4L IS and 1D combo a little on the heavy side but will get used to it in a short while.
If all else fails, get a monopod, for all its inconvenience it really does take the weight off your hands. Initially when shooting the 5D and 70-200 Sigma combo (4.75 pounds), I was thinking "I'm gonna need a pod, can't hold this thing up for too long", so I bought a pod.
... which now sits at home all day because I can handhold it. 
Yes.. photography does make you pump iron, or rather, magnesium alloy and stainless steel 
Now 300 f/2.8 IS and 1D combo (9lbs) - if you can handhold that for an entire game I take my hat off to you.. you must be *BUILT*. Most shooters using supertele's, even IS ones, use the pod.
Technique, training, and practice counts for a lot. Go out, shoot more, you may even notice an increase in physical strength as a bonus. Something tells me Billginthekeys might put some bulk on thanks to his rig