Lots of good comments and advice here.
Truth is, no matter what kind of solo watercraft you pick it will deliver advantages as well as disadvantages. You see so many different hull designs in kayaks and canoes nowadays. This is because boat designing has always been a deliberate trade-off: a shape change made here delivers one useful benefit, but does so at the expense of losing or diminishing another useful benefit there.
I have never paddled a kayak, but expect to do so sometime this spring or summer. (As soon as I stop hyperventilating at the thought of doing a half-Eskimo roll…)
What canoes and kayaks offer fly fishers that is so wonderful is SILENCE ON APPROACH, so long as the paddler does his part by employing careful paddling strokes in combination with not rattling his or her on-board gear.
Kayaks have it all over canoes in the category of minimum wind resistance, a definite advantage if the wind kicks up. I use a solo canoe and paddle it from the kneeling position. Kneeling elevates my eyes higher above the lake surface and that increases my view angle down into the surrounding water, helping me spot underwater cover at distances farther away than would be possible if I were seated closer to water level in a kayak.
In a canoe or kayak, you should fish from the standing position only if you have safeguarded your family’s future financial comfort by making them the beneficiary of a high-dollar life insurance policy.
I suspect that a person’s fishing gear is better protected and kept more accessible if you use a canoe rather than a kayak. (But I could be wrong; again, I’ve never paddled a kayak much less fished from one.)
I’ve never rowed a pontoon boat. A lot of people like 'em. They look too tall to me, like they’d be better employed on quiet water, places with minimum wind and wave action.
If you’d rather not buy new right off the bat, a web site you can check for USED canoes and kayaks is:
www.paddler.net/Classifieds/
You can find some good boats and good deals there.
Joe
“Better small than not at all.”