I do it almost like the guy in the video except I don't cut through and separate the filet in front of the tail, instead I flip the filet back over the tail and run my knife in between the skin and the meat so I don't have to hold on the edge of the skin to do so. When I am done the part you don't keep is all one piece and goes directly into a trash bag.

Dog I rescued in January

[Linked Image from i.postimg.cc]