I think they are excellent but not as a main anchor, actually never use one as a main anchor! They really do dig in. They are basically a spade anchor like a rocna
The flook has that instant dig in effect which feels like you're going to rip the cleat off. They really are a prick of a pick to retriever, especially in muddy clay. I guess thats where experience comes in. Take out the slack, cleat it off and let the boat bob around and do the work
until it frees..same way to retrieve any anchor thats dug its way to hell.
The flying aspect not so good, sure it glides along way but just give it a tug to open the cantilever action..nah it just flys back at you. Any mud or grit in the linkages that stop it acting like a well oiled machine defeats it. Either tie it open or put a spring on it to help it out.
They don't like it when the wind
changes 180'. As hard as they are to retrieve when you want them back they equally just pop out and flip over when the wind changes and never dig back in. My experience, because they love to hold a big clod of clay.
In saying this I still love them. They are light, easy to stow, easy to deploy and set almost immediately with great holding power.
Everyone has a flip flop Danforth or similar as a backup, I have a Flook.
I only ever use it as an insurance
plan when conditions worry me or an emergency
back up (generally when I've gone to the aid of other boats dragging in tight anchorag).
Which is what brought me here, scouring the net in search of the much hated Flook to replace the one I lost
because I had to cut it free after using it to drag a much heavier boat than it was ever intended for off the rocks. I believe it must be somewhere near the core
of the Earth. R.I.P little Flook.
The seach to replace continues.