Hoot, you don't need to cross the NFLP Creek twice before Lower B.S. lake. There is a route that sticks to the north side--I've done it 3x, once with my 11-y-o daughter. (she wasn't afraid of the exposure) This set of videos follows that route. Here are the pics with my daughter.

If you take it, you need to watch the videos several times, and try to memorize the several key spots, especially where you scramble up onto that "elephant ear" ledge.

The route joins the south-side route just past the waterfall Bob wrote about above.