The Fortress anchor can be reassembled from the normal
32 degree angle to 45 degrees
to increase holding power in soft mud bottoms
by as much as 400%!

To change the fluke angle from 32° to 45°.  
See below picture for guide.

1. Loosen the nuts on the clips that are attached to the flukes.

2. Slide the narrow rounded rod (called the stock) through the crown and out the other side until it goes through the shank and clears both sides.

3. Then, push the flukes forward on the crown toward the shackle end of the shank, and you will see another hole in the crown.

4. Re-assemble the anchor with the stock going through this other hole, which should be covered with a sticker that says "Soft Mud Anchoring only".