I'm assuming your search for Jump Checkers came up empty?

Kevin Hill in 1975 made this game up while him and Steve Owens were having a discussion about how to play Checkers. I used to play it a lot back then, but it more or less died out. Talking with Bepop on this site got me to remembering the game. Like Kevin's Embassy Chess, he hasn't gotten around to setting up a web page or site about the game. He says it'll happen soon. I saved some of the conversation with Bepop and will post it in a day or so if there's any questions about the play if someone wants to give Jump Checkers a play or two.
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Jump Checkers is set up like regular checkers on an 8 × 8 board. The play of the game is only on the 32 dark colored squares. There's two kinds of pieces in the game, Men and Kings. So far it's like regular Checkers, eh? Jump Checkers is won in the same manner as regular Checkers; the player that moves last wins the game.

The Men move one square diagonally forward. They may also jump over one of their own Men or Kings and land on the unoccupied square directly afterward (Chinese Checkers style). The Men may not jump the opponent's Men or Kings unless they are making a capture or split jump. A capture by a Man is made by jumping over ANY piece and landing on the square directly after the jumped piece that is occupied by the opponent. The enemy piece is removed from the board. There are no double jumps and capturing is not mandatory. Strictly optional.
A split jump is similar to a capture, except that the Man lands in a square already occupied by a Man of his side. When this happens, both Men occupy the square together. They are not put together into a King, but remain two separate Men. When one of the Men in a split jump is moved his place to be moved to is one of three squares. Either directly across orthogonally or to one of the orthogonally side squares. If the square is occupied by the opponent, it is captured. The Man left behind in a split jump is just a regular Man again and moves like he did before becoming a part of the split jump. If the opponent can move to a square occupied by two Men in a split jump, he captures them both if he chooses to move there. Kings may not be a part of a split jump, only the Men. If a split jump Man is moved to a square held by the player with a Man, it is a split jump and the two Men are as usual in a split jump.
When a Man reaches the last row of the board he is promoted to a King. This is done in the usual way by placing a Checker on top and crowning him. A King can move like a Man and also has extra movement and capturing abilities. A King may move one square diagonally in any direction. A King may move sideways orthogonally to the next square that's part of the board. If a King moves sideways to such a square and it has an opponent's piece or split jump there, it is captured. A King may move straight across forwards or backwards orthogonally only to capture an opponent's King. A King cannot make this move to capture an opponent's Man or an opponent's split jump, only a King, and a King may not make this move without capturing. A King may jump any piece and land on the square directly afterwards without making a capture. If a game becomes a game where all the pieces on the board are Kings, a King gets one more capturing ability. When it is all Kings, a King may capture another King that is two squares away diagonally. (Think of it as if the King had jumped a piece and landed on the King)

That's the rules. :) It's simple enough, but it plays a lot differently than regular Checkers. It can get complicated too.