So, if I were to get a Revo, why would I pick the 13 over the 11?
That's an excellent question. Each boat offers advantages, depending on one's circumstances, priorities and preferences. For the sake of comparison, let me include the Adventure. These three (Revo 11, Revo 13, Adventure) are in the same design family (similar tri-lobe hulls, with forward decks and larger bow hatches). Along with the tandem Oasis, they share certain common traits (opposed to the Outfitter, Outback, Sport group) -- good seaworthiness, quieter running, very good speed/range (for comparable length).
But each has its own distinct ride, feel and physical characteristics.Revo 11:
lightest, shortest -- easiest to carry, load, transport and store. Liveliest, most responsive handling. Most "fun" IMO. Some limitations on height and weight, less stable than the Revo 13, about .25 MPH slower cruising than the Revo 13.Revo 13:
Best all-around boat (pedaling, paddling, sailing) in one package. Best primary and secondary stability of the three. Highest load capacity (rated at 350# but can easily handle 400# IMO). In addition to weight, can take a taller person than the Revo 11. Better paddling and sailing than the Revo 11.Adventure:
Longest, fastest, smoothest riding, quietest, best in bad weather, best paddling, arguably the best sailer (has daggerboaed capability). Largest, longest cockpit of the three. Can be wettest riding, less stability than the Revo 13, largest turning radius, front hatch not easily accessible on the water. Length can be problematic for storage.
I don't really see much overlap between the three models. There was a void in the smaller, lighter segment that the Sport has been partially filling until now (especially after losing the Classic in 2007). The Revo 11 adds a great alternative for someone who desires or requires a smaller, lighter boat but wants good performance and capabilities. It's a lot of boat for its size!
PS. Some users feel that they need the most stable platform possible and make their decision accordingly. Although the Hobies differ in comparative stability, all Hobie kayaks are very stable boats -- it's one of the first requirements the design engineers consider. So the descriptions here are for relative comparison only.