Seriously, my local Aussie rules team (West Adelaide) who play in what is a minor, state league competition have far better communication with its fans than Manly does. Every day or every other day whatever the case may be, they are on Facebook and Twitter telling their supporters (not just the members) about who they've signed or re-signed or lost to another club or retirement, among other notices they want their fans to know about.
On social media most of what I read about the Sea Eagles comes from its fan made pages. There really is SFA from the club itself.
Honestly, how hard is it to employ a social media manager who can keep the supporters informed of what's happening on a regular basis?