Dave, I'd agree with Bill, field conditions particularly even the slightest breeze put limitations on what can be 'consistently' achieved. That said, your images look excellent to me
I always use a (lightweight) monopod that I carry attached to the camera. I have also found that if I use the monopod to ground the camera I can often extend the camera closer to the subject without having to lean in (to undergrowth) so far. I find that as the eyepiece moves away from me that I get a narrower view, but am better able to 'see' sharpness. More to the point It means I am in a much more comfortable posture and so more able to keep steady.
I know this sounds a bit odd, but try it in the garden on a flower or similar subject and hopefully you will see what I mean.