A GPS is a toy on this trail in the summer. It's good if you want some statistics but that's it. There are upward to 200 people on the trail; therefore, it's difficult to get lost. I don't think I've ever pull my map out on this trail except to identify landmarks.
Generally, it's a very friendly bunch of hikers on the trail that are more than willing to chat you up as you make your way to the summit.
Just go and have fun.
