It is recommended to never anchor from the stern because it can cause the boat to:

Anchoring from the stern can cause the boat to swamp because it alters the boat's balance and stability. When a boat is anchored from the stern, the bow can rise higher in the water, which creates an angle that allows waves to more easily splash over the transom (the back part of the boat). This is particularly dangerous in rough waters or if waves are present, as the incoming water can flood the boat.

Keeping the boat anchored from the bow helps maintain a more stable and level position, reducing the risk of water entering the boat and ensuring that it remains securely anchored without the added risk of being swamped. Understanding the dynamics of boat positioning and water interaction is crucial for safe boating practices.