From experience, there is a fine line when using one behind the boat. Scaled to sushi can happen fast. Ha Ha
Not to be a tard but isn't that where the majority of the pollutes r in the fish
i use thishttps://www.youtube.com/watch?v=Cny-5VMUKcAits amazing how mush less of a mess it makes and its so easy you just have to get the scaling attatchment for the electric knife