i didn't take the dat yet, but i know that the destroyer questions are not exact (things that called copyrights... if you heard), they are SIMILLAR to what you will be seeing on the test.
also, the destroyer was written not for you to see how the questions in the test look like, it was written in order to TEACH important concepts so u will be prepared in the most efficient way for the exam.
there is no easy way out, you have to study by your own and not solely depend on the destroyer. the destroyer is not a holly manuscript, it is the study tool - the best study tool for the DAT - that will HELP you very much to study for the exam.
i also have the destroyer, but i am not sitting around all day and waiting till my test day gonna come by, i am in the library 6-8 hours daily study my a** off with other sources to fully understand the destroyer and to be prepared for the test in the best way.
the destroyer is NOT the test, the destroyer is a learning tool that focuses on the DAT.
study the concepts and i will promise you that u will be fine !!! don't memorize, but understand. have quick reference books and sources next to you, especially for the bio section.
GOOD LUCK !!!!