Greetings Great site here, lots of valuable info. I'm looking for a portable sharpener that I can use in the kitchen or take out on camping trips to fillet fish such as salmon and ling cod. Some of these pro filleters on youtube are amazingly fast to fillet but I have no clue what they use to sharpen their knives and at what grit. From what I've read on this forum and other sites, a polished edge is not recommended for this, true? If I'm out in the middle of nowhere and need a very sharp edge I'm thinking that a diamond steel is the way to go. Yes, I know it takes off too much steel but I don't use this knife a lot through the year and it's a Dexter or Victorinox so they are on the softer end I believe. I was also thinking of a fine or polish regular steel but they just re-align the edge and will not sharpen. If I'm hitting bones while filleting, which I do now and then, maybe just a regular steel is ok, but then again I'm in a salt water environment and a regular steel will rust. I don't think diamond steels rust do they? Any tips appreciated.