If you’re gonna use it to surf I would say those dimensions are FREAKIN HUGE!!! If turning is high on your list of priorities shorten it if you want that width. My 8’8" fish is less than 28" wide and although tricky, you can still stand up paddle it… At 36", maybe somewhere between 9’ and 10’? No more than 4" thick on any length at that width… If mega gliding is the priority then GO FOR IT at 12’! Can’t wait to see it whatever you decide… I’ll make a thread about my open ocean board that you can see some enormous dimensions… Even then its only 29" wide…
"I don’t think anyone wants to SUP near other people, or at least near strangers. "
Not consistent with my recent experience at Hanalei Bay. Not only did they want to SUP near other people/strangers, they wanted to paddle into every (desireable) wave, from 50 yards outside of you.