very very good points here and from what i see in this country he is bang on, this has happened here for the last 3/4 years as 500 hundred miles is the furthest we fly out of ireland i think the only thing would stop day yearlings is the extra 100 miles a good 600 mile race, and i was told by officals of the infc that they would never be goin any further than 500 miles due to heavy losses as the 500 has better returns, this 500 miles seems to suit the middle distance 10/12 hour pigeons and yearlings of course and with this new trend and systems it looks like its here to stay .