You'd either have to have permission to get onto the base for this one or figure out a back way. We had permission, but I think Dave tracked a back way that might work. (See GPS track below) We had a bit of a time finding it, but we did. It was gated and not in the best of shape. We just happened to look up; that's how we found it. The Goodman Hill GPS Track Zip File contains a couple of maps. The route closest to I-5, the red line on the maps, goes through a gate that is not always open. It was not when we tried it. You would have to try and call to find out when it is open. There was a sign on it that seemed to say it was open during certain hours. Good Luck with that! The blue line on the map did not pass any gates that even could be closed. So it would appear that route can be done at anytime. When you get to the southern end of the red line, on the east side of the lookout, it is still almost impossible to see. Get out of your car and walk to the west. Look up! The structure is very tall!