Manly Premier League is going well because it's full of fringe 1st graders, not simply PL standard players if that makes any sense. A lot of that team can play NRL football, but staying in the top grade is the tough part, Manly has more depth than many care to notice this year, and when you add some marquee names then that depth is what supports you for that next season with the new names.
The Tigers have done this for the past few off-seasons, despite their recent form, they are one or two star players from taking another step, mainly because their depth is steady.
I'm not saying Manly is primed for the Finals or anything misleading like that, but they will improve next season. But Toovey as coach? mmmm, let me sleep on it.