I'm considering doing Big Frog this summer from Thunder Rock Campground. It looks similar to Mt. Guyot from Cosby that I did last fall, but with less elevation gain. I'm thinking of doing it this way (one day) because the forest service office said the road up to the trailhead was pretty rough and didn't think a passenger car like my Honda mini van could get up there. Anyway, any advice anyone could give me about road conditions, trail conditions, etc, would be greatly appreciated. The whole area just looks awesome from the road and it's lots closer to me than the Smokys.