Note the perch the lady is cleaning have been scaled. The lady in azteca's YouTube link does not explain what she is doing. Both methods are basically the same except the lady removes the head which may or may not be helpful for your procedure. The method also works well for smaller bass since both species have the same body shape. YP fillets sold in the retail stores have the skin attached as required by government.
Also as in Azteca's link because the lady does not have to cut through scales,,, her knife stays sharper longer. A sharp tip of the knife is important in making fillets. The bigger the perch the larger the pin bones, and cutting larger pin bones dulls the knife quicker. Same with LMB and WE. She uses the butterfly fillet technique that is usually performed by commercial fishery operations.