As a rule of thumb the bottom
paint should continue up to two inches above the DWL, (design water
line) - that way when the crew and equipment (hair dryer, ice maker, disco ball and lit palm tree) find thier way aboard you are still 'covered'.
Do you happen to know how many pounds it takes to sink your boat 1 inch (I forget the scintific term), on mine it's 450 pounds per hull, so 900 lbs of crap sink me 1 inch.. Reason I ask - if you don't want to raise the bottom
paint, unload the boat enough to bring the waterline back to where it belongs.