I have used Fortress anchors for years and swear by them. I lost one- a Fortress FX-11 that hooked in so solidly in Eastern Bay when I was setting it that the rode snapped. I have not had the problem with the anchor sailing that you describe. They hook in fast and set well, in virtually all my experiences with them. Biggest problem is getting it to let go.
Fortresses don't corrode in normal use and storage- they stay clean and don't rust. I did have one which was stored in the lazarette and one of the flukes was in contact with the bonding system, which has copper straps. The tips of the fluke corroded. Fortress replaced all those parts in a day or two for the cost of the shipping, which was about five dollars. They are a good company who stand by their product.
In the Bay here, they work well, although they are not the only anchor that works well, and they are not the only aluminum anchor, either. But they have been reliable enough for me that I would include a Fortress on any boat I buy. The fact that they disassemble and store easily is also a plus. Also to consider is that they have been in production for three decades and no change if any to what they make, and they have sold thousands of them, with a high rate of satisfaction. That is significant as well.
