This was a really lovely hike.  I didn't really enjoy fording the Pedernales River but after that I really liked the scenery.  I took the spur to make the hike longer.  It was amazingly beautiful terrain but I did come across fresh feral hog signs.  Since I was in total solitued that was a little bit disconcerting.  It appears that the pack of hogs moved across the park, N/S direction because I came across additional signs on the nearly directly opposite side of the trail. 

One additional thing - the solitude was very nice but became disquieting on the spur.  Be aware that there isn't a whole lot of traffic on the spur trail and plan accordingly.