It is time to get a new tube for the kids (teenagers). Our current tube is one of those 60" triangular ones, with open top. Works OK, but want a tube that can be one or two person. Biggest issue with it, is when it flips, it becomes a massive brake, and is "fun" to pull in and wait to drain it. <br /><br />The closed 72" "D" style looks like a good solution. Doesn't look like it can take on water, and with neoprene pads, the kids will have less tube rash. How well do these perform with a couple of kids, say total weight of two kids will range from just over 200, to around 300lbs, when the "boys" are on it? Also, does it still work well with only one person of 110lbs? or is it too light and trys to fly? <br /><br />I really wouldn't want to go larger, because hauling it will become a real pain. Any comments welcome.