I'm totally about the
Dog Park. Mine was a rescue at about 11 months when we first got her, so I'm not familiar with the extreme energy, but if there's a dog park although you won't have the control over the pup, he will be in a safe area that you know 1. he won't run away in, and 2. he's a puppy, so he's most definitely going to get love from every person and dog he walks by!
Also when you train, try to do it after a walk or something mid exhaustive. Probably not after a park trip, but after a walk in the morning, or a few rounds of fetch. At that point, the extreme hyperness should have worn down even a hair, and you can get a lot more done in a session. Like they've said before, stay stern, and let him know who's boss. He'll get it, and don't be surprised if he picks it up faster from your husband since he's a man, I've found that the dogs respond to guys faster. Just keep it up and you'll get it eventually!
Good luck!!