In a light aircraft the 1.3Vs is all that is required, far too much is made of approach speed by those who want to make themselfs feel important by turning flying into a black art.
Far too many short runways have holes in hedges at the ends made by people who have added a few Knots for this and a few knots for that to the approach speed resulting in an approach speed that looks like the Vref for an airliner.
Next time someone starts this adding speed to what is in the flight manual tell him he is being TFC and remind them that the extra speed blows holes in the flight manual landing distance.