Agreed with the testing before you go... this year I'm bringing my ExOfficio underwear with me. Absolutely love them already, and suspect they will be just as awesome on the playa. Worth checking out.

My first year I took a pair exactly like those Keens, and by the end of the week I was no longer wearing them at all and had switched entirely to my hiking boots. As others have mentioned, playa gets trapped in there and becomes pretty uncomfortable. Even when I got back from BRC, I tried to clean t...

Probably fabric and gorilla glue would be your safest bet to avoiding moop. Cut out panels for the different sections of your shoes and glue them on. I'd also recommend to see where you need "give" for the shoe bending before gluing on.