I've been at target for nearly 2 months now, but I'm still terrified at putting it all back on again, even though I've fluctuated between target and 2lbs under.
As a general rule I stick to plan, usually have an extra hex (which one depends on what I'm doing for meals - or if I fancy a hi fi bar). I generally use up my syns - although somedays I'm under, some I'm over.
Having said that, I also don't worry if I end up going out or having a take away - and pull it back either before (if I know about it) or after (if it's a spurr of the moment thing). This includes 5 days of eating out for my birthday last month (I gained 2lbs which I lost the following week) and this weekend where I've eaten out everyday since Thursday and I still have to face the scales, so now I'm being super good taken my syns back down to 5-10 and 1 of each hex.