Betting against Duke

I went 2-2 last night but won my two 500 unit plays while losing my two 300 unit plays, leaving me up 340 units for the night. With the 340 unit increase, my total now stands 3,400 units. I have one early play today and that is University of Miami covering against Duke, with the line currently set at Duke -13 1/2. I am laying 400 units on Miami and suggest you do the same.