One of my favorite items pertaining to fly fishing that I own is my float tube. So much so that I have refused over the years to upgrade to a kick-boat or U-boat even as my venerable "donut" passed into obscurity. So many of the attributes of the old donuts that folks used as reasons to upgrade were lost on me, so why change? I like the fact that you sit lower in the water, as well as the "lounge chair affect" you get when you let your feet float out to the front. I like the quiet finning you can do since you sit so low, and how you can actually use the bottom easier with your fins when fishing obstructed water. All reasons to get away from the donuts for most, but for me they are all endearing qualities, and never more than when I am stalking a flat of lily pads.