>>1309578I have. Mind you, that was about 20 years ago, when I was a kid, and haven't had a chance to do it again (I went both camping, and kayaking, but never a full on, 2-week trip).
1st. Waterproof your bag. Putting your stuff in a large trash bag, before putting the bag in your pack/duffel bag, and stuffing that in the prow/rear of the kayak works great.
2. Shoes. Lightweight shoes that you can get wet with no problem. I don't know the river you will be on, but we had to regularly get out of our kayaks and carry them across obstacles, and that meant jumping in the river. Hell - one time we had to get out and tow our kayaks, when the "river" section was only about ankle-deep.
3. If you're going to wear a neck knife, get some form of break-away lanyard (you don't want that caught on something underwater when you roll over). Due to the proximity of water, obviously, stainless steel is best (although you can kayak with something like 1095, but you'll need oil to coat the blade, and some cloth on hand to wipe it dry. Also - belt knives aren't very comfortable to wear in a kayak.
4. A lightweight poncho is good when it starts raining. Even one of those disposable ones, where the bottom can go over the rim of your kayak (unless you are using a full wetsuit and apron).
5. make sure your sunglasses are on a lanyard (I lost a pair that way).
6. DEET. Lots of it.
7. the more compact your gear, the better, as you are limited by space, as well as weight, and space is the more important of the two (the kayak can easily take a few more pounds, but a few more inches is a problem).