[Eugenia Gabrielov]

I think what you need to ask yourself is which is more important...your watermark, your text or your pictures. If your school or team or sponsor has a legal requirement that you watermark your documents, then do so. However, it is also a possibility to stick on the safe side and not include one.

I feel that this year's submission guidelines may not allow for that much flexibility. This may be something to submit for a Q&A answer.