It seems strange that I have not been able to find a stream specifically on jwp since they are one of the most popular type of pines…
Hey, check this out, besides the black pine roots the tree is a white pine. https://live.bonsaimirai.com/archive/video/miyajima-white-pine
JWP are also a 5 needle variety so you can treat them similarly as the limber pines. https://live.bonsaimirai.com/archive/video/5-needle-pine-nuances
You’re right about there not being a video on a pure JWP, maybe, Ryan is stoked with limbers while good JWP material isn’t available locally and he had enough of them in Japan?