Looking at some statistics there, very few Irish lads make it over the 50 appearance mark over there.
I think Tuohy and McKenna are the only ones with over 50 appearances there currently active. O'Connor will probably get there shortly after and the year or two will probably decide if Glass or Nash make it. Most guys just don't make it so I think with these guys it might just be that their bodies have broken down or maybe they just don't deliver on underage promise for whatever reason. It happens plenty of underage stars that never take a flight to Australia - Coney and Ronan O'Neill would be a couple of obvious examples from Tyrone.
So effectively you have 5 GAA players currently active now, 3 are established and two are kind of hitting make or break territory.
If you thrive over there and come back fit and healthy I don't see why they wouldn't take back to gaelic football like a duck to water. The problem is a lot of lads come back broken, some just don't hack it over there and don't deliver and some do come back and become key players for their county like McKaigue and Caolan Mooney.
Guys like Walsh and Kevin Dyas suffered terrible injuries over there and probably explains why they never had the right impact. Dyas was as good an underage talent as I've seen in the past 20 years and could have achieved so much more if not for injuries.
Agreed, it is difficult, mainly due to the lateness of players taking up the game, trying to learn running patterns etc. That's why a lot of Irish players play half back, its quite similar to wing back in gaelic football - mark your man when you don't have the ball, bomb up the wing and support when you do.
It feels like there are more Irish players now than ever - Glass, Nash and O'Connor (you may have missed him) have been in the best lineup for Hawks and Sydney this year and each have a chance to break the 50 games mark (it should be noted that just above 30% of AFL players to play a single game reach 50, stats from end of 2017).
In the past 15 years, you could add Setanta O'Hailpin, Begley, Ciraran Byrne.
It is true, though that there's a high attrition rate. Kyle Coney is one I often think about - won a minor AI and was highly rated in GAA before coming over to Sydney. Was only here a couple of years afaicr but don't think he had much run since he went back home at all.
Cian Hanley can't train due to his knee (I think) issues.