water is so far the only thing I know FOR SURE that works. When I was turkey hunting this spring I drank more water in a 12 hour period at elevation than I do in 2-3 days normally at my "regular" elevation. This seemed to help.

The first time I experienced the sickness was on the Estes Park trip. We drove from eastern South Dakota to Estes straight through. I was perfectly fine in Greely, CO, which I believe is around 4000 ft. - maybe a little more. From Greely up to Estes Park was the worst. I was in a bus and thought initially that I was more motion sick than anything. When I was vomiting profusely 3 hours later still I knew something was wrong. The only thing I could do for 1 1/2 days of a 3 day stay was sleep and vomit. I have never been so sick in my life.

I am quite positive that with a day or so of acclimation (and being in better shape than I am in now) I could hunt the Black Hills with less difficulty. It is the higher points (8000 ft. + ) that I worry about. Lack of sleep did influence the turkey hunt this year as we arrived at camp at 10 or so at nite (which was 11 pm "normal - i.e. central time") got things set up and ended up sleeping for around 5 hours after a 10 hour trip from one end of the state to the other.

Thank you all for the input and if any more advice is known - keep it coming. I am sure I am not the only one afflicted with this and this could help many others.

BTW - I did shoot a turkey in the Black Hills