Saw this today at the Southampton Boat show, so I'll let you decide........ Not really sure why you would want / need one, but I'm sure i would like a play on one! (and yes they are inflatable tubes round the jet ski)
I got told by an instructor that on the Tidal Thames and the PLA will say its got handles, not a wheel, so its a Jetski (even for bigger craft that look even more RIBlike)!
Maybe it's a RHI-JS It is rigid hull, it has inflatable section, but it's jet ski, not boat,
Whatever it would be fun to have quick blast, but i wouldn't buy 1.