very good article- i think inbreeding coefficients should only be taken as a rough guide though e.g say a greyhound can run 525 yards in 28 seconds and none of his siblings can break 30-then the faster dog obviously must have a very different genetic makeup  and realworld inbreeding coefficient to his siblings.

Do you guys think sex balancing is important? i.e pups descended from a desired ancestor through both daughters and sons on opposite sides of the pedigree.