How can one get lead to float? Assume it is in a lump, not made into a boatlike shape, nor carried in a boatlike device.
(In reply to re: Another idea? - stretching it perhaps
Well, since we're having so much fun with this, how's this:
Swallow it and do the backfloat until you die. Once you are dead, the lead will still float, but I suppose your dead body could then be considered "boatlike", thus disqualifying this method.