I bred Poncho to 3 bitches at the same time during the week.
Bred to one bitch in the morning, one in the evening, the third the next morning.
Skipped that evening ...
Returned to the first bitch the following morning to repeat the above. Did that for 3 days in a row
All 3 bitches took ... one of which was the litter that produced Gr Ch Zukill and 5 littermates (all 6 were matched, 5 out of 6 won, earning 12 wins total).