Yeah the secret is to withdraw piecemeal (small amount)
I usually never withdraw more than $500 at a time.
Its also good to get the accounts loaded for reloads offers of weekends and Wednesdays!
Keep Betfair loaded with the most cash and bookies i keep a few $100 in each of Neds, pointsbet, beteasy, sportsbet and a little in Ubet!
Anyway thats my strategy :0)