I have both a float tube and a kayak. For me it depends on the size and location of the water. For a lake I want to cover more water, and access to the water is more convenient. So, for that I use the kayak. But for small pits and ponds with limited access, you can't beat a float tube. As far as stealth, I lean toward the tube. And it does not need to be limited to summer. I live in Ohio, and start tubing in late March usually. Invest in a good pair of waders. The best advice I got was dress like you do for deer hunting (under the waders). Also, tubing is a convenient way to fish so you tend to do it more often.