As mentioned by Jake, I have used Diamox the last two years.
It is not a substitute for common sense, and you still need to be aware of what your body is telling you.
I found if I started taking Diamox morning and night 3 days before my hunt, it definitely helped me acclimatize.
I also found that getting to high elevation and sleeping there overnight, then taking it easy the first morning helps more than anything else. By afternoon you can usually be at about 80-90 %, and 100% by day two.
I have also experienced some tingling from Diamox. When I take it at altitude in the morning I can feel a tingling in my hands and finger tips for about 15 minutes. Then it goes away.
Another side effect of Diamox is it makes anything carbonated taste like crap.
I found I only had problems with altitude sickness over 11,000 feet. (coming from 3,000 feet).
Once you start suffering the effects of altitude sickness, I have found that if I descend below 8500 feet I start to recover. Even if for just 4-6 hours, I can then head back up the mountain.
I have only had 2 rough times with altitude sickness, and 1 more that wasn't too bad, but those times have made me very aware of how my body can turn against me.
Others have stated before, you are more prone to altitude sickness if out of shape or "big boned"

Some symptoms can be confused with dehydration until they get severe. Drinking a lot of water can help quite a bit.
If anyone has any specific questions about my experiences, feel free to pm me. I wouldn't wish it on my worst enemy....well, okay, maybe just one guy!