My hair is as well, a little longer than shoulder length thick, and pretty curly, but I usually straighten it so that makes my hair even worse considerig i've been a swimmer since I was 9, But I have found that Getting mine really wet and putting conditioner in it does help, although I must admit i'm sort of half hearted when doing it. I usually dont and just use a really good shampoo and conditioner after I swim.
But as for putting it up, I put mine in a bun like pony tail. then I turn my cap inside out and fill it with water then dump it on my head then just adjust it and stuff the rest of my hair that didn't go in, but its usually not much.. I dont know if that makes sence but that was the easiest way I found during my swim team years, unless i have a friend swimming with me then i just have them help me.
"We are what we want to be, We are free to have it all, Its In OURSELVES to Rise or Fall. " -Aida