I felt the most time consuming part of the process was bugging my letter writers to get the letters submitted. I think they like to string you along and watch you suffer, because they all get it in basically on the last day.
On another note I used an online PS editing website to help me. Basically you write your PS to the point you have it finished then submit it to them, pay based on the number of words, and they send you back some modifications. I am not the best writer, but they did a really good job and I felt it was really worth the money. They don't change it much, but they have some cool ways of just making things flow better. Anyways, I can't remember the site and I don't want to endorse it, but there are tons of them out there. I also asked my dean about it and said it was legal and OK by all the standards he was made aware. Just my opinion....