Here are two test prints the one on the left made exclusively with the "soft" contrast light, and on the right made with the "hard" contrast light.  I select an exposure from each and then make my first test print as a combination of the two.  In this case I liked a .38 second exposure with the soft light and a 4.5 second exposure with the hard light. I expose the paper then .38 seconds using only the soft light, followed by a second exposure of 4.5 seconds with the hard light and see what I get.