Blank Answers vs. Guesses

Hi! So I'm gonna throw it way back to tests like the SAT, ACT and other standardized tests where I was taught the method to just guess if we didn't know it because there is a small penalty for wrong answers. Is this the same thing I should be doing for the LSAT? If I am running out of time and still have questions unanswered, is it better to leave them blank or at least put some sort of answer down?