A cheap ($10-20) foot pump from a sporting goods store (with the proper fittings) will do just fine for any float tube. Most come with multiple fittings. But, you can blow it up yourself (using your own lungs) in very little time. The float tubes have one-way valves which make blowing them up very easy. I actually think its easier than using a pump (I suppose it depends on your level of hot air, lol). FYI, a funny thing about float tubes...if you blow them up at elevation and don't deflate them before going back to civilization (lower elevations, presumably), they will appear to lose air. The same goes in reverse if you blow them up at lower elevation and then head upward.
Zugbugz - Arizona