Part 3 of 5 videos from 2000 by Bill Boomer and Milt Nelms on competitive swimming technique.
"Assembling Aquatic Performance Platforms on Boomer Boards - focuses on constructing a swimmer's aquatic chassis. This core framework or working platform contains our aquatic suspension system. Swimmers use this unitized suspension system as a stabilizing tool when managing aquatic environmental forces."
It's important information, but the whole series could have used higher production values and better editing. It will likely appeal to only the most serious students of swimming.