MGMAT stop watch and it dramatically improved accuracy of my answers as well as timing

Could you please elaborate the approach?

I used to take lot of time in RC section esp complicated RC passages while solving Official guide. Timing the passages helped increasing the speed and answering all questions within target time.
Strategy:
1. Read first question before reading the passage.
2. Read the passage in 2-3 minutes.
3. Skim through the passage first. If you have problems in speed. Place finger on sentences while reading and scroll through the passage.
4. Read first sentence of each paragraph and last sentences. Esp for purpose of the passage type questions. Author is primarily concerned with/ What is the main idea etc type questions.
For what passage suggests in lines .. type of questions you can go back to particular section and read it while answering.
5. Approximately 90 seconds to 1 minute to answer each question should be target.

thanks poonam, i hv just started with RC, was having issues with timing... will keep these points in mind.