If you know anything about spreadsheets you can do a nice easy to use fish journal with one. Also I used to carry a pen recorder, and kept exact records. I found the experience to actually detract from my fun so now I take an occaissional pic or two, but I work from memory, or experience whichever you like to call it. If you fish enough you get a feel for the conditions and how to approach things.

The journal worked, and if I was a guide or made my living in any way from fishing I might be a bit more serious about a journal as my system worked quite nicely. I just don't want to be that structured in my recreation time.

Anyhow that's my take.

Later,
Jambalaya