Hello I use to read a book when I was in highschool about a group of troubled teens who go white waterrafting in trip in some teen learning program.They decided to steal the raft from the adult and go rafting by themselves.All I remeber there was a quiet kid named carlos,a rich kid and some bully and they try to survive in the wilderness.It was a great book and badly want to read it.Can anyone help.There was also a sequel to the book.