Over the last several years, we seem to be averaging 6 locks for every female that lays. Only a few locked up more than 6 times and didn't lay but many others only locked 1 or 2 times and didn't lay.

I can't tell you for certain if the first lock took and all the others were for fun or not. Clutch results don't seem to help me understand or predict, sometimes its the first male, other times its the last. Makes it all very exciting when those cut little heads start pipping.