What I have done that has increased my score from -14 to -7 is that I stayed focus throughout the whole passage. The LSAT writers make the passages boring on purpose to try and make you lose focus on what you're reading. No matter how boring it is you have to do your best to stay focused on the passage and remember what you just read. Take as long as you need to read the passage but just make sure you focus because if you know exactly what you read, the questions will be 10 times easier.