That's exactly what I did. The second trick you mentioned is what I did. Thank god for easy ways out.
Heh, I was only playing on Hard. I'm not a hardcore gamer so I'm not the greatest at shooters. Weird because I'm usually pretty good playing shooters online but I have great difficulty playing shooters on the hardest setting. I probably could beat it on crushing (I beat UC1 on crushing) but I feel that if I attempted it, I would probably break my hands from punching things.
Beating crushing in Uncharted 2 is harder but I found it more rewarding. Use a pillow to cushion the blows. YOU CAN DO IT!