My 1000 watt rated hub only pulls 6.7A (321.6 watts @ 48v) suggestions? I am a big boy (~230lbs) living on a mountain. My 1000 watt electric hub powered by 78 18630 Lion batteries in 13 cells barely moves me level let alone up a hill (which was its intended purpose). I tested its current to find it only pulling ~6.7 amps on a wheel stand. Times 48v only gives me just under 322 watts. Did I get ripped off? Is there something I am missing? 

Under the circumstances I'm considering removing the rim and spokes, attaching a cog and connecting it (centered in the frame) into the existing chain/de-railer system, directly.

Suggestions anyone?
Even if you've only got around 300W, that should shift you reasonably well on the level. The limit here is 250W and that can manage 15mph with your weight on the bike, though the acceleration isn't great. But the current draw with no load (on a stand) will be a lot less than the loaded current anyway, so you probably can get the rated power or close to it. I assume it's actually rated to 1kW at 48V

The motor controller is important - is that suitable for over 20A? Is your wiring?