Sufficient force

3.4.1 A hit from a hand-held weapon counts when the weapon's striking surface lands with sufficient force.

The key word in this rule as written is 'sufficient,' for which the Merriam Webster dictionary defines as, "enough to meet the needs of a situation or a proposed end," ie. a proposition whose truth assures the truth of another proposition. In plain English, what is sufficient is inherently subjective. This can be interpreted as meaning: if both fighters agree a hit was sufficient, then it was sufficient. Given the nature of the equipment and materials used in the construction of foam-padded weapons, as well as the relative size and strength between individuals, and accounting for full-force, fast-paced melee combat then we can begin to notice a general trend in what is considered sufficient force in regard to boffer sports. That is, we experience a handful of sensations attributed to being struck with sufficient force which are helpful when acknowledging blows. Use these tips as a tool for striving to always be an honorable, chivalrous, and all-around likeable fighter.

 Clearly witnessing an attack connect with your valid target zone and deflect or rebound off course
 Hearing an audible pop from the impact, or a heavy thud
 A ~feeling~ of being hit that arrests your attention and the momentum of the blow

Several indicators can be useful for determining if a hit was sufficient such as hearing an audible impact, feeling arrestment of a weapons momentum (ie. on a target limb), or a sudden deceleration of a motion. Many have waxed poetic on what it means to deliver a sufficient strike. Ultimately, what is and is not sufficient force is decided by the player who recieves the hit. Friendly communication between fighters during and after a combat regarding a hits sufficiency is a widespread cultural nuance that reinforces the honor system and ensures everyone enjoys playing Dagorhir.