I had experience with the Shooter, but not in a tail. It has rounded, beveled "corners." But the blade is stiff and thin, and can act like a knife blade in a tail with repetitive motion. In a pool, it would not be safe to lane-share when using a Shooter. In contrast, the Foil is made of rubber, has a thicker blade, and will not cut through a silicon tail. It provides plenty of thrust, travels well, and you can lane-share without any fear of injuring your lane partner.