~I~ usually bet on 24-48 hrs doing it. Perhaps i'm too optimistic... ::)
Maybe I'm too pessimistic? I've definitely managed to kill the weevils without killing the strawberry despite this, but strawberries are pretty tough.
If I was dealing with something that really couldn't stand waterlogging it would definitely be worth cutting it finer.
With a small number of vine cuttings it's actually easier to knock them out and wash the soil out.
Horses for courses.
Cheers.