I have since sailed this board once. It plains a lot easier than my Aquaglide, but I felt uncomfortable at speed without footstraps. It can do a planing jibe, but it is not as easy as my regular board. I have never sailed a Kona, so can't compare.
Sailing it in the waves was a blast. Super loose on the wave face. Great bottom turns and top turns. I had a couple of times where I generated so much speed I inadvertantly got an aerial, which without footstraps I was unable to land.
I can tack it so easily that I was tacking it at the last minute to catch waves.
I am thinking abut trying it with footstraps, but for SUPing the footstraps get in the way, and I don't like having to put on/take off footstraps every time I change between sailing and SUPing.