Best for Portability: Starboard Inflatable WindSUP

Though handy for travelers and the space-starved, most inflatable SUPs are about as steady as a water bed. This 12-foot-6 board is solid and stable but hits shocking speeds.

And it morphs for windsurfing: Screw on the sail rig (sold separately), drop the daggerboard, and you'll have a light-wind sailboard. [$1,500;]