i drill holes in the plastic struts sticking out need a very small drill bit then you can screw the trap to the loft , then they never blow off think this has happened to quite a few of us in the past , you never know a few might work there way back mate
to be honest tried it both ways i.e end of week and alway through with similar results but a little and often does keep the birds in good condition and there feathering has a nice sheen and good falling of down
good debate , but each bird / strain will be different , and weight can be fat or muscle , feeding controls weight and exercise creates muscle it's getting the ballance right you cant put fitness on a unhealthy bird