Is it generally easier to get into schools (like University of Michigan) if you apply for the summer term?
Nothing comes easy when you are talking about admission processes. The merit and skills are base for approval and hence you should take things seriously to have improved your chances. There are possibilities of being approved if you present yourself quite impressively without missing what you have as your strong points. So, be self confident and go for a hard attempt to make an impact through your application submission. Good Luck 
@SteveJones: are you simply making stuff up?