I usually start pairing on monday morning, check for locks. If by tuesday evening he does not lock i move him to the next female in the line.
The moment i see a lock i note it and when they untangle I put him on rest till next monday.
I like to follow the 1 copulation a month schedule, would the amount of locks go beyond the point where the weekly schedule does not work i shorten it in slightly. Though I aim for 3 ish days off, especially after a lock.