I don't race roundabout,but my hens are housed in the next section to the cocks. They fly out and are trapped to their section, midweek racing when the cocks exercise the hens are let through to their boxes and then basketed for the race, they trap back to their section on return. Friday the hens are sent through to the cocks and both sexes are sent to the race.They both trap to the boxes on return,and left together a couple of hours,it just keeps it simple.Cocks don't race midweek.