both groups are populated with lots of very inventive and creative people
So far so good. Quite a few things in common there.
I seem to pick up a vibe here and there that writes off all the over-unity enthousiasts as 'kooks', based on their misunderstanding of the fundamental laws of physics, esp. thermodynamics and I strongly disagree with that.
Why ? After all, I'm firmly in the other camp, am I not ?
Because the whole universe is one big over unity device. Nobody has any clue where the energy to power the big bang came from (sorry creationists), all the theories notwithstanding, the eyewitnesses are a little thin on the ground, yet we can simply not deny that this universe is real and full of energy. Unless of course you have a copy of that elusive universe 1.0 owners manual and the maintenance reference guide that comes with it.
Whether you believe in god or the great handkerchief is irrelevant for that, it is a simple and undeniable fact that all this energy exists, yet nobody ever paid a dime for it and we have not even a ghost of an idea of what started it. Whatever we do today, tomorrow the sun will rise and there will be free energy for the taking on every square meter (or foot for the metrically challenged) of this planet and every other surface our sun is shining on. Far more than we can EVER consume.
Now for the heart of the matter.
Dear over unity enthousiasts. As much as I symphatize with you, everytime I see Zubbly deal someone the Ace of spades (hilarious, what a mind bender that is, quite a talent there !) I cringe a little. It sort of 'marks you', if not for life then at least on this board. You are now officially a kook... shame on you.
Sure, it's easy to make fun of those 'kooks', after all we can easily see why their devices won't work. We all have an education... even if some of us can't spell. But look at it this way: If you can't give me a full blown explanation of why we have all these stars undergoing fusion based on atomic reactions, fusion being nothing but the liberation of the energy stored in the atomic bonds (just as fire is the liberation of the energy stored in chemical bonds, to put it simply) with a full chapter on how that energy got stored in those bonds to begin with then you'll have to allow - as a true scientist would - that over unity, in at least one case seems to be a reality, therefore is worth investigating. It's just a matter of scale after all. A 'little bang' perhaps ?
A good proof needs only one example. Even if from that one example forwards the general agreement between scientists seems to be that it was all - energy wise - downhill from there. The only thing we eventually SEEM to be able to do is spread energy around until the point where recovering it costs more than what we get back. Most notably these losses are in the form of heat radiated away from whatever devices we are using. As far as we can see, on a macroscopic level any interaction between matter loses some energy in the from of heat. It's sad, but that *seems* to be the way things are, that one example to the contrary notwithstanding. That's quite a burden of proof to overcome, and some pretty bright minds have literally burned out searching for a way to prove the opposite. Consider yourself in good company
But please don't burn out. Maybe restate your goals a bit and 'join the other side' where the goals are so much more achieveable.
I doubt - as much as the next guy probably - the merit of this frantic search for > 1 output devices. And the more simplistic ones have me chuckle each time someone comes up with yet another 'great idea'. I guess part of it - as Dan mentioned - is that this board seems to have more than its share of 'enthousiasts'.
But to me that is a 'good thing' (sorry Martha). An educated 'over unity' enthousiast is fair game for becoming an alternative energy enthousiast. What with all that we already have in common. All it takes is a little patience, and maybe some education. And if by chance one of these guys would stumble on a way to make that room temperature fusion device a reality, boy will we all look silly. And terribly poor in comparision to boot 
I say go, overunity enthousiasts ! Prove me wrong please, I'll be as happy as a clam with your little fusion device powering my sports car. I don't believe in it but if you do then don't let anybody stop you. But *do* try to keep an open mind about it. You *could* be wrong, and maybe all the energy we have here is just one big cosmic bank loan, and at the end the books will balance out to 0. (There is some evidence for that at the sub atomic particle level, way too detailed to explain here, but it's kind of interesting to see how on a very small scale really weird things happen, such as time flowing backwards (experimentally observed and confirmed in peer review, and energy being created and subsequently destroyed, ditto). Every scientist that wants to keep his job however is going to be very very *very* skeptical about any macroscopic evidence of these effects. They tend to cancel out at larger scales. No brownian motion 'rectifiers', no electron pumps, no air pressure capture devices and so on. As far as we know - which leaves a tiny little loophole - they are impossible.
And spend as much time as you can on getting educated in the relevant fields, physics, mathematics, chemistry and any other exact science that touches on the fields that you want to dabble in. It will save you embarrasment, and maybe you'll come over to 'our' side of the fence after looking at it from a dry scientific point of view. Or maybe you'll see where we all went wrong and the last laugh will be yours.
No electrons have been harmed in the production of this piece, all of them were safely returned to their respective atoms at the end of the day.
best regards, & may the force be with you 
and thank you all for having me on here, it's *lots* of fun, I have not found any other place ever, online or offline, that had so many creative minds pushing towards similar goals ever before, and I'm very happy that I have found you.