I am not a H16 sailor, but it seems as though 250 lbs should right a H16 in most conditions. If you need an additional 220 lbs of ballast to right the boat, then I would think something else is wrong. A couple of things to think about: main downhaul loosened, main sheet released, traveler released and most importantly - is the mast sealed at the top? A leaky mast head will certainly cause righting problems. Am I way off base in my assumption that this amount of weight should be sufficient?
Jerome, could this be your problem? Cat Caper was a good time. I have a new boat coming in March. If I had to pick between Slip-to-Ship or Island Hop - which should it be?