That exact plane was built by and flown in the movie by Mark Reed, the owner of Prism Kites. In fact, the actors were flying his kites as well.
https://prismkites.com/If you visit the site and look at each kite, there are many photos taken around Alaska. Several members from this forum might spotted as kite models.
Here’s one of my favorites.
https://prismkites.com/dual-line-foil-kites-prism-kites/. This is my wife Amanda and Mark’s wife Chris flying a kite in 35+ wind.
Mark and Chris fly their Sportsman from Seattle to Alaska each summer and do the AK backcountry thing. His plane can be spotted in several clips from my recent video. Heck, here’s the link again. It’s a sweet plane and nicely equipped. He recently installed a belly pod and it really makes the plane a hauler.