paddleboarding

Although kayaking is a popular activity, not everyone has the money, storage space or transport capabilities required for one of the boats. That's where the Kayakomat comes in, as it's an onsite, internet-bookable kayak-rental vending machine.

Although inflatable stand-up paddle boards are popular due to their portability, most of them still aren't light enough to carry for long distances. The Chasm-Lite is an exception, as it's reportedly the world's lightest, most compact inflatable SUP.

If you're going on a self-propelled river journey, is it really self-propelled if someone drives you back when you're done? Perhaps not – and that's why inventor Ben Kilner created a paddleboard/bike-and-trailer combo known as the Duckleberry Finn.

Although one of the big appeals of paddleboards and kayaks is the fact that they are human-powered, there are some scenarios in which a motor could help. The HydroJet was designed with that fact in mind, as it can be mounted on existing watercraft.

Perhaps you like riding your ebike but you also like paddleboarding, and you don't like the idea of having to choose between the two. Well, with the Red Shark Bike you don't need to, as it (sort of) combines both activities in one watercraft.

Stand-up paddle boards certainly can be fun, but kayaks are generally a faster, more efficient means of getting around. Watercraft company Bote has now combined the best features of both, in its redesigned Rackham Aero paddle board.

Stand-up paddleboards, powered surfboards and even hydrofoiling boards are all becoming more popular, but buying one of each could get expensive. That's where the modular XFoil comes in, as it can serve as all three – if you opt for enough extras.

Using a stand-up paddleboard is definitely a great form of exercise, although the ways in which a typical board can be paddled are somewhat limited. The Supski is different, in that it offers multiple paddling styles to work multiple muscle groups.

Although stand-up paddleboards are eco-friendly to use, they're typically made of not-so-green substances. German scientists are trying to change that, with a board made of sustainable materials – obtained partially from old wind turbine blades.

Although there already are exercise machines that simulate skiing, rowing and other sports, they're usually separate devices that are fairly large. Whipr takes a different approach, consisting of a base unit that works with multiple attachments.

​Stand-up paddleboards may be a lot of fun on the water, but they can also be a hassle to store and transport – especially if your vehicle doesn't have a roof rack. Massachusetts-based startup Artech is out to change that, however, with its modular Easy Eddy.

​John Wink, SlingBoard's creator, says that his big-wheeled roller combines all the best bits of paddleboarding, skateboarding and mountain biking. Essentially a longboard with a widened deck and a special pole for propulsion, the land paddler is currently raising production funds on Kickstarter.​