I have done it before, but wont do it again. It's just more money to spend. We always wait 2-3 days after 5.0 to breed, and have been successful. Its more of a want to know number, because at that point either we are successful or not?!

I generally do one on the day of an insemination just to be sure she didn't stall. If I know what her numbers were that day, I can judge if I want to do a second cover.