The guy I am helping out has always raced natural, but next year I think he's changing to roundabout, trying to get hens to lay on time, then loosing so many training due to pere, means your forever playing catch up. The worst of all in my eyes is trying to get naturals fit for racing, training means more losses, round the loft they fly but just want to nest build or clap around, great to watch, again your on a loosing battle