Our Del Mar Turf Rolls have perforations which allow water to drain through the turf to the ground underneath. In extreme weather events like hurricanes, water could pool, but the turf will actually drain better than natural grass when installed over crushed granite. Our Del Mar Turf Rolls can be used for light use exercises. We don't recommend using a sled on this turf as the blade used to make this turf is softer to the touch and less durable than our standard gym turf products. Customers have used this turf for this use with success, but we don't recommend it.