Alright, there's a couple things I want to try now. Unfortunately, I won't be able to get out and practice (except for putting) until the weekend. Too dang dark.
1) I think I need to slightly adjust my grip. I throw with a 3-finger power grip (when I have my pinkie on the rim, it changes the position of the disc in my palm) and I usually have my thumb on the rim. After reading through some articles, I think I need to move my thumb slightly back on the flight plate off of the rim. This might help me to not throw quite as nose down as I do.
2) I'm going to try throwing a slightly more understable disc than my Sidewinder, with more of a hyzer flip, and let the disc rise by itself.
3) Work on coming through low to high.
I'm looking at this as an addition/improvement to my game, rather than as a replacement. I love being able to throw a tunneled low-ceiling shot at 6 feet off the ground, and I'm just looking for more distance off the tee on 400-500 foot holes. I think most people have problems learning to keep the nose down, so I guess I'm in a good spot. After reading through all the articles on this site, I think my form is pretty good, and I just need the height.
Thanks for all the suggestions. If anyone has anything else, I'd be happy to hear it and try it out.
P.S. I love the image of throwing the disc flat into a ceiling. That clears up so much for me, you don't even know. I think that's kind of been my biggest problem with nose up/nose down talk.
"a man is a success if he gets up in the morning and he gets to bed at night, and in between he does what he wants to do."
-- bob dylan