I’ve been wondering the same thing. I’m a huge fan of the Moleskine pocket journals, but they don’t make one specifically for fly fishing (or fishing in general), though I’d love that. I may just buy one and convert it into a fly fishing journal, unless i can find a fly fishing specific journal I really like. I’m one of those weird pen & notebook junkies (despite my addiction to tech and my smartphone, i still love pen & paper), so it’s important for me to find the right one.