OMG THIS IS MY LIFE. The nape of my neck is sooooo frizzy and knotty. Single strand knot heaven, which just creates more! What has been working for me, is putting extra leave in conditioner on them and twisting them. I'm overall a 3a, but those are 3c curls so when they twist up, it forms little tiny corkscrews. I generally do this when they dry though because that's when they annoy me. I'm sure it would work when wet. I leave them twisted, no one sees them anyway unless my hair is up.