I just bought a Gardian G5 for the dingy. It's made by
Fortress, but they don't produce a
Fortress model that small. The Gardian is almost identical to the Fortress, but is not anodised, has only 1 fluke angle setting and does not have the lifetime guarantee.
I wanted to keep the weight down and it does that at only about 1 kg. I tried it today without the 2m of chain recommended. Without the chain I was not expecting much, but hoped it would provide enough to hold the dingy by the stern so that it did not rub on a pier or jetty.
I was pleasantly surprised it set well and held the dingy easy in 20k winds with no chain.
Next I tried it in shallow
water near the beach it disappeared below the sand and I could not pull it out with my full force.
I think in more difficult bottoms it will need some weight from chain to set, but if you want a very lightweight means of
anchoring the dingy with no rust it's worth considering. It's several times the cost of the folding grapnel type dingy anchors, but not very expensive in terms of
boat dollars.