MaxAir Swim Fins - Stay Down Longer with Less Effort

All I can say is ask a freediving instructor. Here is his answer.
Look for me at DEMA. I will be wheeling around a cart with the fins.

 

If I can arrange some pool time near DEMA after show hours would there be anyone interested in testing fins? If so offer a time or two you would be available.

 

I’ll look out for you at DEMA. Not sure how I’m gonna find you. I’ll look out for the cart.

 

I watched that already. He said they are "good power for what it is." He also said he was surprised. Even shocked. Perhaps he came into it with very low expectations, so those statements are kind of meaningless.

He never, ever says how they actually compare to the power of his freediving fins. I would think that if they gave as much thrust as his freediving fins, he would have said so. If they were even "about the same." But, he didn't. That suggests to me that they don't give as much thrust as his freediving fins and his shock and surprise was a result of having very low expectations.

A Ninja 300 motorcycle makes "good power for what it is." I am used to riding and racing 1000cc motorcycles. If I rode a Ninja 300, I might even say that I was amazed or shocked at how good it is, considering how low my expectations would be for a 300. That doesn't mean it comes close to the power of my 1000.