The 'yak is a great river for pontoon kick boats. I've floated this many times, and when the rubber hatch isn't on it's very enjoyable.
That being said, you can either use Red's or Evening Hatch for shuttles both are reliable and reasonably priced. I don't know how theft is in the canyon this year, but as fall comes and there's less traffic, consider your put in/take out points carefully. Red's is good to use because you can always takeout at their place, which eliminates that paranoia of having a bad experience re:smashed window on your car.
Fins are a *must* I went without last year on one trip as I loaned mine to a buddy who had never done the float boat thing and I wanted him to have the best experience. They can be had cheaply (caddis?) or expensively (force fin). I'd reccomend the force fins.
Finally, a word about anchors. DON"T DO IT... Opinions may vary on this, however, from my experience floating rivers in everything from the original "float and tote" to the current generation of pontoon boats, Anchors are a death trap.
You don't ever "need" one and if you do it wrong, you're in a world of trouble.
Finally, a rod holder is nice when you're on the oars in more challenging water. I've got one mounted next to my seat, angled to the stern. Just make sure it's out of your way and secure.
Have fun, I'll probably be out there sometime later this week.
BD