Well, it can be done that way also @plushzilla, but somehow I used to do it this way since I was doing it at first with larger sizes, like 100x70 cm so than I didn't have anything large to soak it in. It gets wet equaly since I rotate paper and take care it gets wet properly. And knowing when and how much is just question of practice. I do it with smaller formats and when papers are heavier, than I soak them into something.