I played around with some lidar data of the area where we did the MTB O' last weekend. I managed to figure out how to get the OCAD map georeferenced in Open Orienteering Mapper. I created a little animation of the comparison (the brown contours are the current PTOC map, green and pink are the contours I generated from the Clay County lidar data):
http://i.picasion.com/pic70/38856e2753debc2997dca8...
The contours from lidar are from the DEM rather than the LAS files. It is a lot easier to work with the DEMs from Clay County because they are much smaller than the LAS files and they seem to have enough detail to generate decent contours. You can't get the vegetation info or trees in the forest from the DEM, but it is enough for now.