I'm finding more info here guys:
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(some)
Rules of Dwarf Throwing
1. If a dwarf is thrown thrown through a glass window or glass door, he must wear gloves and a suitable mask.
2. If a dwarf is thrown through a burning hoop, extinguishers must be provided.
3. If a dwarf is thrown down a well, the organizers must ensure that the bottom of the well is dry, and is covered by leaves to a depth of three inches..
4. If a dwarf is to be thrown across the path of an oncoming train, the thrower must previously satisfy the organizers that he bears no personal malice against the throwee.
5. If a dwarf is thrown into a pond or river, he must wear a wetsuit and need not be tightly bound.
6. If dwarfs are thrown at night, they may be painted with phosphorescent paint, so that the point of impact may be clearly seen.
7. If a dwarf refuses to be bound in the usual way before throwing, he may be put in a straitjacket of the requisite size.
8. If a dwarf utters any sound whatsoever, either in flight or at the moment of impact, the throw will be disqualified.
9. If a jockey impersonates a dwarf and wins a competition because his light weight allows him to be thrown farthest, he will be liable to a fine of 1000 Pounds or three years of imprisonment.
10. It is strictly forbidden in dwarf-throwing literature and publicity, to refer to dwarfs as 'persons of restricted growth' or 'small people'.
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and an obscure article I found