Still have some questions...
Here is a radar plot I did using the information you gave.
http://www.tvfool.com/?option=com_wr...81a35b89c692c0
I picked a home along the 500' contour east of Tee Lake. If you could include the link to your actual radar plot we could offer better advise.
Do you know if your existing antenna is a combination UHF/VHF design. Is it in serviceable condition?
If I were buying a new antenna based on the plot I made, I would pick something like this:
http://www.solidsignal.com/pview.asp...0Antennas&sku=
or this:
http://www.solidsignal.com/pview.asp...0Antennas&sku=
Because of the hilly terrain and trees, I would lean toward the larger antenna. But to give you relevant advise, we need to be looking at your report. Can you copy and paste you link?