Firstly this could have ended bad, as it turned out it was a very cheap lesson for me, I had a plenty of time to act early and did nothing.
Anchored at the sand hills on Moreton Isl in a northerly in about 5mts of water, 30mtrs of chain out. A storm was predicted hours before it came through around 8.00pm . 180 degree windshift and increase from 10knts up 30knts and suddenly I was in 2.5 mtrs of water with a lee shore right behind me. I had the engine running and all systems on in case the anchored dragged.
Fortunately the rocna mk2 reset instantly and held us so all was well. I should have moved the boat offshore to allow more room for when the inevitable windshift came as the storm was coming up from the south. A cheap lesson.
Below is the track from the anchor alarm, the long light blue is the windshift and we covered the distance in probably not much more than a minute. I don't know how much room we had behind us but based on the depth it wasn't much. Happy I invested in an oversize anchor.
That's not a good place to be in a storm if it puffs from the west. I up anchored about midnight in similar circumstances at hat spot. Steamed to mud island which was in the Lee at the time , like most of them storms they dont last that long thank goodness. 
I have a Rocna Mark I and have found it to be impressive, especially its ability to reset.
How does the Rocna Mark II compare?
I have no experience with the Mk1, I had a 22kg sarca excel prior to the current anchor. It never dragged and set first time bar one occasion, I was happy with it.
I decided to up the size and it just so happened one of the sponsored/affliated you tube sailors responded to a thread someone made on seabreeze about the new rocnas with a good deal so I bought a 33kg Mk2.
It hasn't had any real test prior to this weekend. I thought it performed very well with the 180 reset during a squall. I think it saved my bacon tbh, so very happy with it.
Is this a decent general purpose anchor? I have a danforth in a box below decks. I'm sure it's for compliance purposes only, for cruising purposes, do I want a Rocna? Sounds silly but that roll-foil looks like it will make handling easier (though not the intended purpose obviously).
