This pump blew my mind. I inflated the Aire Outfitter II Tandem Kayak in less than 5 minutes with one hand. I'm not too familiar with all the pumps on the market and their prices, but feel safe saying that this thing WAY surpassed my expectations!

I recently borrowed one of these, and I have to say--this kayak is awesome! By far the best inflatable kayak I've paddled. I recently took this out by myself on an open-water reservoir, and just put my dry bag at the bow to even out the weight distribution since I had no partner to tandem with. It worked perfectly. I had no real problem tracking through the water despite being the only paddler and the flat bottom. Anybody with even basic paddling technique should have no issues. One thing I didn't anticipate was the fact that there are 'drains' along the bottom that allow the water to come in and out of the bottom of the boat. However, fully inflated, on flat water, the seat raises you high enough off the surface. But if you're taking this on a river (as it's originally designed for), you're probably going to get wet--even if you don't tip. That being said, that's part of paddling, so no big deal. I had no problem with stability even when the wind picked up and foot and a half waves started breaking. The only thing that I didn't love about it was that it is pretty wide. So if you're short, or have a paddle shorter than about 210cm, you'll have problems really 'digging in'. It inflated in less than 5 minutes with minimal effort with the Aire Barrel 4" pump, and deflated just as fast by open the valves and rolling it right up--fit right in my car's trunk!