Take Loop 306 in San Angelo to Knickerbocker Road and go south. Please review both maps. I grew up in the back woods and there was no "Crooked Oak Tree by the red barn with a tin roof" for me to include in the directions.
Follow the Black Dots to the Pack Saddle BBQ cafe'.
ZOOMED IN ON RED BLUFF ROAD
At the Pack Saddle, take Red Bluff Road following the dots in the map below.
Look for the metal gate with the ARCH. If I remember correctly, the gate is white.
If you're still not sure, shoot me and email. I'll try to clear it up. There's a KOA over on the other side of the Power Plant (you can't miss seeing that; it's the fenced in area with all the deer lounging around. LOL)