Fishes work great in a variety of conditions, fast and flowy having the paddling power of a bigger board while surfing like a shortboard. The twin fin setup with a wide swallow tail surfs very down the line and somewhat stable. For a more progressive fish consider single or double wings enabling tighter turns and more top to bottom flow. Typical dimensions are 4-6 inches shorter than your thruster and with a small trailer fin plug. Check out the Kaimanu disco biscuit coming soon. You can also order this with an smaller and more progressive tail.