Originally Posted by
zondaracer
I’m confused as to why they stayed in the pattern/circuit. Had they just maintained VFR, proceeded on their way and picked up the clearance enroute with departure or center, it may have been less chaotic. That, or pickup the clearance on the ground but request a VMC climb/departure so that they can get the runway that they want. The VMC departure has to be requested and cannot be suggested by the controller.
I think it would be difficult to proceed VFR departing KBFI without going into class B, and that requires a clearance.