When we went lake camping I took a small canoe to carry the camping gear - its pretty hard to carry your gear and food in a kayak. I now have 3 kayaks and 2 canoes.
??? I have 5 kayaks and in my two 17footers I can carry easily all my gear and 3+ weeks worth of food in EACH of them... Taking a second along just splits the load and leaves lots of room for extra comforts...???
On the other hand, I love kayak camping as much as backpacking. They take you two different spots and many of the ones around the eastern TN/Western NC are pretty much exclusive. You can't paddle to some great trail camps nor can you hike to some great shore-side camps.