Yuzo Higuchi, the director of this episode, agrees with the interviewer in a book article who asked him if this episode was meant to warn people about the excessive resort development which spread into every part of Japan back then.
“Woo” seems to be described as the name which came either from an Okinawan word (the script of this episode was written by Tetsuo Kinjo who was originally from Okinawa) denoting a kind of fabric pronounced in a similar way or from the title of the show “WoO” being planned along with “UNBALANCE” while “UNBALANCE” finally turned into “Ultra Q.”
As it is likely they had a lot of snowfall on the location set they hadn’t had for the last 20 to 30 years, chances are it made the filming very hard. Higuchi recalls they had to walk very carefully not to leave any footprints on the snow and that none of the cast and staff were good at skiing so they had to hire ski instructors in the locality to have them perform for the long shot scenes showing the SSSP members skillfully skiing down the slope in a graceful manner instead of the cast members, Kurobe, Ishii (present Dokumamushi) and Nihei.
While having the instructors ski instead of them, it seems that the cast had to wait shivering in cold with their overcoats on as their SSSP uniforms were worn by the instructors while they didn’t bring the spare uniforms to the location.
Higuchi says they had a very hard time because, for the medium shot scenes showing the actual cast, the SSSP members were not able to stop on skis where they were supposed to play to be properly caught on film as they easily got out of the picture with the momentum out of skiing from a place a little way off with their skis on.
The ski field that appeared in this episode is likely to have had a resort facility affiliated with TBS, which should indicate how much popular going to resorts including ski fields was among people during Japan’s postwar high economic growth period.
Woo is also well known as a kaiju who appeared in “Ultra Fight” afterwards with its costume always having its long hair cover the face and with a completely different character as a violent fighter somewhat with an eccentricity who easily picks a fight with the other kaijus.