In my opinion, a canoe seems more logical for fishing, since you can access gear more easily, keep long items inside, and sit a bit higher. Some folks do fish out of sea kayaks, though, so there's more than one way to get the job done.

Your design looks pretty nice. I think frame-and-stringer construction will definitely work, I would probably use 3/4" ply vs. the typical 1/2" but that may be overkill.

Plastic keel and gunwale rub strips are a good idea. The keel strip may give a little more directional stability if its pretty thick. You might look at polyurethane "leading edge" tape as an alternative to the UHMW polyethylene if you want something to protect chines.

: Been thinking on this one a while. I wanted a boat to fish the
: local flowing creeks from. I have played with a fishing kayak.
: It was mainly a Rec. Boat with a large open cockpit. Added a
: well in the back for a cooler or milk crate. I just wasn't sure
: that was what I wanted on the creeks. After much debate I
: finally settled on a double paddle canoe. I like the openness
: for fishing from. Keeps the rods below the gunwales were it is
: not as likely to be dragged out of the boat by a limb.

: I am going to frame her up fuselage style and skin in it a heavy
: weight nylon. I plan on fishing/paddling a lot of moving streams
: and that means a lot of abrasion and bumping around so gunwale
: and keel strips will be must. I am thinking about UHMW keel
: strip. I know it is going to get a lot of abuse.