Which knot is specifically useful for temporary fastening while tying up to a piling?

The clove hitch is a versatile knot that is particularly well-suited for temporary fastening. It is commonly used to secure a boat to a piling or a post due to its ease of tying and releasing. This knot is effective because it grips well under load yet can be untied easily when necessary, making it ideal for situations where quick attachment and detachment are required.

The clove hitch, when tied correctly, creates a secure hold around the piling without being overly complicated, allowing boaters to quickly dock and undock. Its design relies on two half-hitches wrapped around the object being secured, which provides strength and stability while still allowing for quick release.

In contrast, other knots like the figure eight knot are primarily intended for forming a fixed loop and are not ideal for temporary attachments. The bow knot is often used for making loops but may not provide the same security on a post as the clove hitch. The half hitch, while allowing for simple fastening, may not hold as securely on its own without additional knots for reinforcement, making it less effective as a primary means of securing a boat temporarily.