Does the Dock mark up the hull of my watercraft?

Does the Dock mark up the hull of my watercraft?

T Dock modules are made of hi-density polyethylene that is softer than the hull of your boat. If you keep the dock clean, you will experience no damage. Should you allow the drive-on area of the T Dock to accumulate debris (sand, mud, etc.), an abrasive may form and scratch your hull. This situation also applies to your boat trailer, rack storage surfaces and bunks on a boat lift, or for sub-par or incorrectly formed hulls.