I had to bring this up to the top again, mainly, because I've run across better ways since my last post here. Don't get me wrong, the Air Bleeder has been good in it's applications. But, the original question was about field sharpening, and this question seems to keep coming up.
I beat the bejesus out of my HH alot. I use it for many duties while working on my property, and as a result, the HH gets dinged ALOT. While outside I use the EZE Lap M rod mentioned earlier. I now keep one in all my BOBs and gear. It works great and is very inexpensive. I am trying to come up with a small version of the sandpaper/mousepad sharpening setup for while I'm camping. This setup has been the best for keeping the edge real nice an crisp and I use a steel and ceramic rods from Handamerican.com for the real difficult spots. I have had some real issues with keeping my ST Ripper hair popping sharp though. In house or field, I can get it sharp enough to skin and gut, clean fish and cut my food up while camp/cooking, but it's just not getting as sharp as it did when I first received it or right after I stripped it. Maybe I'll get some good feedback @ Blade West this weekend. I'll share if so.