I'd consider a small one as a groveller/fat wave board. I've been riding a SS2 SWS 5'10 carbon wrap custom I picked up and it's been going unreal in those conditions though. Would like to try the 5'9 QK in CW. I liked my V3 in CW but only in minuscule waves as it was overvolumed and got crazy out of control when there was any power. My SS2 is only 29.5L and feels really good doesn't bang around like a boaty epoxy and goes bananas in anything you don't want a HPSB for.
Isn't the QK a modified Short Round with better upper range? Why don't you just get a Short Round?