From what I gathered the ski lodge is about 5 miles away from where the truck was found. Here is a little more info:
http://www.undergroundozarks.com/forum/viewtopic.php?p=26844
That was an interesting forum, especially when you look at the dates being way before the Jamisons were missing.
I don't know how anyone works with coordinates, but it does mention the ones where the lodge was intended to be -
35° 2'33.82"N
95° 3'58.64"W