Hii aspirant ,
Coming to your question I would like to tell you that the mop up round is like the spot round which is conducted by the counseling committee for the left over seats in the colleges , so according to my opinion if you haven't got any seat than you must go for the mop up round.
Hope this helps you ,
Good luck.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile