You will have to get on board people with low stamina trainees (I now tend to ignore trainees like that). The effect is surely clearer at a young age and this kind of trainee usually do not finish a game.
I need to remember to participate with my Utopia team, then. Three of my trainees are down to atrocious now, so I could definitely be the "worst case scenario" guy. Shame that so many of them also seem to be aggressive as well, so they have multiple avenues to disappoint me (if they were quality enough trainees to be worthy of my disappointment, at least). ;)