Long ago on this Thread I retold a story from my Line Manager in the pre war C.S. (a Captain in the RFC in WWI, flying Sopwith "Camels") about a chap who reasoned that, if he reversed the direction of his tail skid in the air it would greatly shorten his landing roll. He devised a way to try this, and it worked fine.
Only his aircraft parted in the middle: the front half (with him in it) went slap into the side of a hangar.
Danny.