I like the idea of using it to corpse skeletons. I have a couple I can play around with. I know that it needs to it has to have contact with air to cure. I need some hands for a current project. I was wondering if this could be used to cast them somehow. Maybe building it up layer by layer or would that take forever?
Like YOUR hands, or a prop hand? And, make LATEX hands, or make hands out of something else using latex as the mold?
I would actually suggest you make a 2 (or more) piece PLASTER mold of the hands you're wanting to cast (assuming prop hands here), then when it is done, pour latex in, coating all sides, and pour back out the excess. do that 2-3 coats, then fill the hollow space with cotton balls, or great stuff, or something.
Those horns above were done similar. Here's the clay horns sitting in the plaster while making the mold:
Once dry, just coat everything with petroleum jelly and pour more plaster on top, leaving yourself an opening to our your latex later.
Now, if you want to use your hands, I'd strongly recommend making a copy before getting around to trying to do something with the latex on them. Make an alginate mold of your hand, then pour plaster in it. You now have a plaster hand muck around making molds of.
Ideas please. More of it is available if 50 gallons isn't enough too. 
