With the exception of the noise made by 4-wheelers…..I’d say scent plays a FAR larger role than any leaf crunching noise you may make walking to your stand. The farther you walk to your stand too….the more scent you’re laying down on the ground and on the bushes as your move through the woods….. as well as the more scent you cast out across the landscape downwind of where you’re walking. The conditions will dictate how far downwind your scent stream travels and how long the scent on the ground will linger.