Hello, I am looking at getting a new tail but I'm stuck between 2 choices. One, a pure fabric tail and the other is a tail with neoprene on the inside and silicone on the outside (hybrid tail). The thing is I like to make my swims more challenging and also keep my dolphin kick sharp, so which of these two tails would keep my legs closer together more, the fabric one or the hybrid. Or would there even be a difference? Sorry for the weird question, but I just want to know. Thanks for any responses! ❤️