Michael, are you married, have siblings, children (over 18 of course), parents, parents in law??, I'd do it sooner rather than later as they will close you down unless you can talk sweet and fast. In my opinion (and I've told them as much) they are chasing and closing the wrong people. They should start with the bots that jump anything and everything for pennies, unfortunately no markets are immune anymore. But no, they hound the poor aaaaaa who is not a big punter/layer, or the person such as yourself who is testing something and wants to start off small.
When faced with the same dilemma about a year ago, I rang the person who was threatening to close me down to explain my situation. It was like talking to someone who had no idea what Betfair was!! He told me it was his job to investigate bets less than the minimum (was $6 at the time), detect the users, send the warnings and cancel the repeat offenders. He said if I could identify any "wrongdoers", he would investigate. I said ok let's go to a race of your choice, anywhere, anytime. I showed him pending bets on nearly every runner that were less than the minimum and asked if he was going to cancel them all. It's a start he said, so I said let's go to another race, same situation all over again. etc etc A year on and nothing has changed. Go to any race now and you'll find loads of them. Seems he has a job for life.

Having several accounts is also useful for getting around the punitive charges they have for regular winners.....even though winners are (apparently) welcome at BF.

As for multiple users being picked up by the ISP police, we're not dealing with the CIA here.