Akichow,
I find a GPS handy for the return to the crossing point to get back to LSL. We set a waypoint at the top of the climbout of LSL. This trip is not all that difficult. Once you break into the open the route is to Sky Blue Lake is straight forward.
Personally, I like 7.5' quads for land navigation. I use TOPO! California for planning and a route map with notations and waypoints.
