Finished right side the same way, then went over it all again. Finished with a flexible sanding pad.
Got stuck into the exposed glass around the spar cut out. Was still a bit of foam/micro adhering, so ground it down to the underlying glass with the Dremel.
Indulged myself with more prototype artwork. Rough nude lady on the other side...
Foam has some horrible divots out of it. Will try and fill them with dry micro, underfilled so the slurry will work better over the top.