I had an 11' inflatable with a high pressure air-floor. With a 15 hp Yamaha it planed with approximately 500 pounds of load (3 people) in an ocean with 1-2 foot seas. That, in my opinion, is the only benefit of an air-floor vs. roll-up versions. With an 8 hp motor
an air-floor inflatable will probably plane with one person on a mirror like surface at high RPM's.
My unit did not leak, but it required extra effort to pump it up and deflate for storage
. The boat was also heavy, 100 lb or so, it took two people to handle it. If I was buying
something now as a tender
, I would get lighter inflatable (50 lb would be my target) with slated floor, as compact as possible to keep it in a locker. Would use it with a 4-6 hp motor, also as light as possible.