The Olympics got me for another $10 so the Bank is at $727.50
After analysis it has come down to this:

Port Power -10 $1.77
Sydney +3 $1.49
St.Kilda +5 $2.33
Fremantle +17 $1.74

Now I may or may not be combining these selections.I shall let you know on Monday.
My full revelations will recommence at Round 22.