The narration did say that she was a take off from the Alden Malabar design: Malabar I Alden design 155 was 1921 as narrated.
Yes, it showed him chain sawing a tree and mentioned East Texas Thicket wood. It may have been fine--the Oak frames for the Constitution came from Naval Live Oaks near Gulf Breeze FL, and the Southern Yellow pine would be adequate for plankking--many of the snapper boats were made of this.
I have seen some very nice looking boats from the outside--but inside the frames were not adequate--too light. The Malabars had relitatively light frames, since they were racing boats. Going back and looking, I think that he must have had a full table of specs, and done it all to the design. They were somewhat modeled off the Grand Banks schooners, like BlueNose. Of course the Banks schooners had very heavy frames. It looks as if the sails are canvas--not Dacron.
Definitely a passion--and I hope that he gets to really do some sailing in it!