I tend to believe that it is best to keep your thoughts on each chapter to yourself at the beginning of the process. There's something powerful about "declaring yourself" early in the process and then you might feel awkward later on when you either change your mind or get released. Toward the end, it may not be such a big deal and hopefully only done in a setting where you feel absolute trust with whoever you're speaking with. I know that I thought I was most interested in one group on day one, another group on day two, and then all of the sudden realized that there was one group that was consistently on my list was my true favorite, but being ignored!! Fortunately for me, I got it straight by preference. I don't know how it would have affected my thought process if I had actually told people what I was thinking throughout the week. Hope this is a helpful perspective. Have fun and good luck!