Low-angle football

I've mentioned before that I was inspired by Peter Read Miller to try photographing football from a low-angle, as he recommended doing for American football.
I tried it again yesterday for a full game and I now think this is definitely worth pursuing. It's going to be tricky to do it in bad weather because you have to lie down, so if you see me turning up at a football game in leathers then it will be for purely practical reasons!

The ideal camera position is around 10 inches off the ground. Any lower than that and the grass in the foreground becomes a blurry mush.

I find that shots from this angle are best presented in a wide format. No doubt they'll be cropped in the newspaper but at least I can post the wide versions here. What would really make one of these shots work would be if the action happened with lots of other players around, to fill the wide frame. Having some stadium seating in the background wouldn't hurt either.
Another thing to keep in mind is that the best action for this angle is very close to you, so you've got to be ready to grab the shot and then get out of the way.