I'm not averse to s turns, but you really should be stable not too much closer than three miles.

At some point the ga becomes preferable to s turns.

..My Ops-manual says go-around is the only option from an unstable approach..Most airlines require the same..

..I once had a Co-Pilot, who wanted to ´´slip´´ an ERJ145 on final to lose altitude..Such procedure was not mentioned in our manuals, so his approach must have been stable then..Or not ??

Fly Safe,
B757

Does it say you can't s-turn prior to the "donut" in space you have to fly through meeting stable criteria? (whatever that is for your airline)
If they haven't gotten to the point that stable criteria is required, is the approach unstable?

OMG. Someone did some s-turns. 🙄