I didn't expect to see any trip reports about climbing up the dunes! You're right, it's really hard, we didn't bother going to the very top because we wanted to get to our camping spot before it was too late. I'll either go barefoot or wear gaiters the next time I try hiking up around there.
Next time I go, I'm taking something to slide back down on! Woooo-hooooooo! --mark d.