The problem now, is how to carry on under the bookies radar without getting your account closed. The best approach for this, is to actually think like your average online gambler and act more like them, this isn't to say you become a wild gambler, but you need to appear to be just one of these.
Don't always try to maximise profit- yes on some forums this is the golden rule - to always look for the best matched odds. Doing this frequently makes you stand out as either an expert gambler or a matched bettor. It is therefore much better in the long run to take a quick 70% profit on a free bet, than to waste large amounts of time finding the closest match for an 85%+ profit.
Your account is more likely to survive and long term this will mean sustained profits.