Here's an alternate method of tieing a sheepshank sling. Normally, you would form an "S" in the bight of a line, throw on a half-hitch at each small bight of the "S", then tuck the working ends through the bights, transforming into 2 bowlines, making it a "locked" sheepshank.
My way uses an extra bight, or 2 "S's" stacked, allowing for quick weave through the 5 cradle lines...I can report that it's great for throwing apples & oranges...or, tie a couple of constrictor knots inboard of the bowlines to adjust for size of projectile.