Free anchor
 

The only problem is that it's on the bottom of the lake. So if you're a bored diver, it's in twenty feet of water in the little cove southeast of Worcester Island. It is a 9lb fluke with about 5 feet of galvanized chain, two shackels and a short length of line.

I knew it set a little too good when we arrived. When we tried to leave it wasn't coming out.

Anyone try the trick where you connect the chain solidly to the crown and then tie-wrap it to the shank? The idea being that if stuck the tie-wrap with break and the anchor will pull out crown first. How about the anchors with the sliding rings, do those work?

I've had an anchor stuck myself more than once. Did you try tying it to a rear clear and powering off in the opposite direction in which the boat was drifting at anchor. This will exert a prying force on the anchor and has always gotten mine up(with an occasional tree limb still in the fluke).
Too late in this case but just something to keep in mind if it happens again ;)

I tried powering in pretty much every direction. I was a little nervous about pulling a cleat out. I've had the anchor stuck before, usually I can either power or giggle it out. This time I could hear and feel the shank moving but the flukes had to be wedged under something big.

What often happens is that the anchor will slide under the points of three boulders. :(

I recovered my neighbor's anchor last week (he had tied a float to the anchor line) by running in a big circle around the stuck anchor. The technique has always worked for me.

I also have a large galvanized ring that can be slid down the anchor line, over the chain, and down the shank to pull it out by the crown.

(Attach a line to it first). :)