Well a 360 on approach is against the law where I'm from (and probably where you're from too!)
The safest option obviously is to do a go-around and try again but if you are in a pinch and you want to get back to the apron before that clock ticks over, s-turns are the safest bet.
The reason for this is that, in my New Zealand cpl flight test pass, I was marked down for slipping on final. The problem is that if you were to get into an out-of-balance stall (just say) at the low altitudes of final approach, you will not recover. If you are flying in-balance s-turns and for some reason you stall, you may be able to recover.
If you find yourself with passengers in that situation and you have to use s-turns to get down...
Tell the passengers beforehand!!!!!
I can't imagine anything more terrifying as a non-pilot passenger than having the plane roll over to 60 degrees angle of bank left and right so close to the ground during a manouvre which is widely touted as the most dangerous of the whole flight!