This story mainly refers to Barks' "Fantastic River Race" (USGD 1), and "The Great Steamboat Race" (W US 11). I didn't find any redrawn panels from those stories (I don't own "Fantastic River Race" in my comics collection. There are probably panels from this story that could be used [?]), but you can compare this scene :
... with that one :
... from Barks' "The Day Duckburg Got Dyed" (WDC 201)... Strange technique to get ideas, isn't it?... Seems that wackiness is genetic in the Gearloose Family!...