This is the only map I know of:
http://www.bigbearmountainresorts.co...e-map-2005.jpg
Fall Line is on it but Pirates is not. I know alot of the trailheads are not marked, unfortunately. We always start off my going left at the top and then left again at the split in the fireroad. We then take the 1st trail to the right and then there will be two splits and you can go either way. I say, go explore!!! Oh, and have fun.