Thanks for the information. I agee the old trails sounds like they should be removed. 

BTW - have you used Strava Heatmap to see what usage the area is getting?

 https://www.strava.com/heatmap#18.08/-122.45942/45.65255/hot/all shows significant activity in the area. By creating an account, you can actually load a strava heatmap in the editor which makes adding trails much easier since a single gpx trace is often off a bit.

Let me know if you need any help. I'm out of town today and tomorrow but back by Monday.