This is not a training video. This was a quick comparison of two products, a wire rope comealong rated to 4 Ton that often gets used by 4WD enthusiasts as a backup recovery device, and the 6 Ton More Power Puller from Wyeth Scott, made in the USA.
This was produced by Hand Winch NZ, who distributes Wyeth Scott More Power Pullers in NZ and Australia (https://www.handwinch.co.nz/ ).
This video demonstrates the pulling ability of the More Power Puller hand winch, pulling a Nissan Navara up a 1525 degree slope with the handbrake on.