The Ortin is a solid plastic, thru-wire, walk the dog surface bait that has two weight inserts (1 on the top and 1 on the bottom at the balance point). The bait has a lot of belly roll. With harder taps, the nose will pop up. With softer taps and/or adding weight to the top, the belly roll is more pronounced to the point of laying on its side. The more weight you add to the bottom, the lower it rides in the water. The swoosh sound changes depending on how low it runs in the water. Get more information at http://www.h2otackle.com