MAybe he doesn't feel secure enough in the carrier? I know when dd was little she swam in the pouches so she didn't like it. The bjorn puts pressur on the hips so maybe that was uncomfortable. The moby seems like the best bet if that is the case. Have you tried different carries. Maybe he wants to face out instead of in or vice versa. How does your dh carry him. Maybe if you could mimick the carry he uses he would like it better. Don't through in the towel yet There are still so many possibilities.