"Flemming Torp" wrote:
even with a ratio of 2:1 -
you still have to haul in about 15 meters of chain and the anchor -

Yep. When it pops free, you have to be quick about it. Hand over hand,
leave it in a pile on the deck and tidy up later.

it is not
that easy - in my opinion - to wrap and unwrap the chain around the
cleat ...

Granted.... rope is easier.

as soon the anchor slips the
bottom, the boat starts drifting backwards ... and at that point, I
still have some 8 meters of chain and an anchor to take care of

Another tactic I've used in a tight situation, take in as much rode as
you can without breaking the anchor free. Then, veeery slowly, drive
over the top of it and just keep right on going, bouncing the anchor
along the bottom, being careful to not foul it in your prop, until you
have room to drift while you properly take care of the anchor.
Obviously, all sorts of things can go wrong doing this, but desperate
times call for desperate measures. I've resorted to it a number of
times when there was simply no other way.

Rick