Another problem with the 76 is that if you have popped the floats with the gear up (it will still work, the explosive bolts disconnect the doors from the gear) and you then select gear down, you will poke holes in your floats.
And to answer Air Jockey's question, wouldn't it be better to have some weight below the floats to stabilise it better? If the cg is high, it will tip over easier. But I believe the 76 settles reasonably well into the water and the doors will still open OK.