His was 5'10 x 18 3/4 x 1 3/4. At 46yrs old and 200lbs I was content with just hanging around since, honestly, I am HUGE for this size board. But then a set came, I missed the three waves cause I could not generate enough speed (and sunk it, honestly

So, the lesson here is that it's more about ability than anything else. I would still not get a board that size, I don't want to catch 1 of ever 4 waves, but it's good to know that if I wanted to push myself I could.
Maybe it will be my new year's resolution to loose enough weight to ride a shortboard under 6ft. Anyway, food for thought...