We attempted this hike a few months ago and the water was rushing and there was no way to cross. Lately Walnut Creek had been so low so figured this was a good time to head back to McKinney. We passed a group of 4 early in our hike, otherwise saw NO ONE after we left the falls. Found the right trails with the park map but only because I'm good with maps. Hot day and the falls were crowded though. It appeared you could park at TPWD and get in free the back way but we didn't try it. Google Maps did send us on Smith School which actually doesn't connect. $5 per person now to get in, but worth it! This hike is better than the Onion Creek hike, I would hike Homestead, Rock Shelter, then Onion Creek until it heads up the hill.