the worry with hayes is that many many ruckmen whom get slaughtered by their lower endurance appear to end up not been competitive enough,nankervis for a young ruckman has a huge tank,but guys like angus graham, vickery,never improved their tanks enough to become afl standard rucks, it also led them to not applying any pressure, not chasing, not doing the one percenters, if hayes has a competitive streak and is good in these common poor ruck areas, i would still consider him for pick 25 he averages 14-15 touches a game, that is pretty good for a ruckmen, i would look at his second half to last quater efforts to gauge if he falls out of games rapidly, a trait that is deadly at afl level.