As a long time paddler, hauling a hard shell yak with a RV is difficult. I purchased the SeaEagle Razor 393RL and I'm very impressed with it's performance. Been there/done that with the AdvancedElements inflatables (Yukon was my fav) but they have too many fill valves and are heavy. The Razor at 13'10" length is about 30lbs and just a bit slower in speed compared to my sea kayak, P&H Capella 16.5" so the speed of the inflatable is pretty amazing. Fill time with a hand pump is 8-10 minutes. While I love my Capella and my Malibu X-13 sit on, the Sea Eagle RazorLite solved our RV transport issue. We also have a Saturn Ocean Pro inflatable at 14' and it's another excellent inflatable (tandem or single) and made very well with a raised off the water drop stitch floor with self draining scupper holes for rough water(pumps up hard) and with Halkey (3)valves.
https://www.youtube.com/watch?v=BxfFM790Vbg
https://www.youtube.com/watch?v=lk6UWUr7tBc