So to follow up here, I got more footage out of it the other day. The key was for me to not use the remote and turn off the wifi. I was able to record in spurts for about 2ish hours. Not straight recording, but here and there. I also left it on the whole time. I didn't want to turn it off/on each time and potentially select the wrong mode.
I bought another batter the other day (hint: Fred Meyer sells them cheaper than REI at 19.99). I'll charge that up and see if I can get more recording time.
Question though. Has anyone used an aftermarket non-GoPro batter for their hero? There's a set on amazon with two batteries and a charger for not too expensive. The batteries are also 1300mAh vs. the GoPro 1050mAh.