I have this same problem! Yesterday I used a paddle brush and left my condish in and it looked nice for a while, but it got toooooo flat! The front of my hair was just wavy and the back was flat. I kinda looked like a triangle-head My friend was like "Why is it so flat?". I think my hair is too short to use paddlebrushes because it makes my hair look weird on top....
SUPER THICK 3C zig-zags, blackish with random natural brown/red highlights. Searching for my exact heritage, 'cause I don't have a clue...