Yes, the signnage for the Knoxville double and the Fall Foxy are quite visible both on Gdn Valley and at the turn onto Wooden Valley and then up at the junction. Everytime I ride up there, it's a reminder of how popular this route is! AND for good reason as some of you know!
Have a nice ride!
You will find nice folks at the Vintage Cafe (Mankas Corner) if you need water or bathrooms. They are quite used to cyclists coming in. Great food too! That's about the last place to get water until you get to the other side of Mt George that I know of.