I'll agree on one point that most have mentioned.... The shutter speeds are just TOO slow. If I was using an image stabilized 300mm lens, I would only use 1/30 sec as a very last resort... A tripod will remove user shake but the subjects are living and moving objects.. They'll always be prone to blur.
I also find it hard to believe that you managed to get three bodies in a row that don't focus properly.


