I use a Cobra Fish'n'Dive kayak as a scuba platform and a fishing kayak. It's a sit-on-top that has a relatively broad beam for stability and it provides good load capacity. My air cylinder, BC, regulator and weights plus fins, camera and accessories is a healthy load, and my son sat in the bow when he was younger. The same kayak has served me well for more than eleven years. My wife uses a different model, a Wilderness Systems "Shaman", that has a faster hull design and maneuvers well. It'll serve for fishing but it's narrower and not quite as stable as mine. I don't stand, but it's stable enough to permit climbing aboard after a dive (though there's some technique involved). I use ultralight spinning rods and open-faced spinning reels. I'm sure there are others that will suit your needs. There's been a proliferation of new models in the last decade. It's well worth looking into it. I often use my kayak for bird photography because it isn't as alarming as a photographer afoot. I may have a photo of it in my profile.

Yeah, I think a standup kayak is going to be a tall order. Consider the kick platforms. They are the bees knees for fly fishing.

You are probably better off to get your wife her own kayak so that she doesn't try to handle too large of a boat alone.

That's the fly fishing advantage to kick platforms: you're sitting much higher out of the water than either a canoe or kayak or float tube (which is about the lowest!). They are also totally stable and very portable. If you decide to go the canoe route and you want to stand up in it (which in any event I really don't recommend without a lot of practice - I'm a former Red Cross canoe instructor and that sort of thing is absolutely forbidden in the training manuals), buy a heavier canoe, not one of the superlight (and super expensive) kevlar models like I have. Probably a "tupperware" type (Coleman, etc.) would be the only thing I'd even attempt to stand up and fish out of. Still, it's just not a good idea. Outriggers on a canoe get in the way when you're fishing out of one. Good way to lose a lot of fish.

Sorry, I don't have anything for you. I'll have a look on-line. The things you really need to concentrate on as far as safety goes are 1) getting in and out of the canoe 2) righting and getting back into the canoe out in the lake if it tips. #2 is, of course, extremely important up here as the water in many lakes stays extremely cold till quite late in the season. Righting an overturned canoe and getting back into it is a real art and takes a lot of practice and a bit of physical strength. Heavy canoes like yours are especially challenging. But I think it can be done (have never actually attempted it with a Tupperware type). Also, it is very important to keep the canoe in balance. If you're paddling alone, reverse the canoe (so stern is going forward) and that will put your seat closer to the center. Always have enough ballast in the front to keep the canoe level in the water otherwise you'll be spending twice as much effort trying to keep it going straight in the water. There's a lot of other stuff that a canoe class could teach you about paddling finesse and portaging but you can kinda figure that out on your own. Work on #1 and #2 above. Almost everybody I see getting into and out of a canoe doesn't know how to do it properly and I'm sure they get wet a lot (especially with the new lightweight models like mine!). Knock on wood, I have only got wet once with my canoe and that's when I was first trying to get the dogs into it. Word of warning on that: I do not advise any of you guys with GSPs or other overly "restless" breeds of hunting dogs to try that stunt. A dog must be ABSOLUTELY under control in a canoe. Imagine me with THREE in it! Well, I do it regularly. And on a nearby city reservoir full of honkers swimming around us! Speaks volumes about my dogs. And maybe a bit about the old fart who owns them. I see lots of folks snapping pictures of us out there but no one has sent me one yet, unfortunately.

Thanks! I'll check all that out.