At 10-0, how many wins do you think the SAINTS need to secure home field advantage?

I realize it isn't all in their hands...I figure 13-3 should do it...the Vikes need 5 to top that and I think their schedule does not favor that....AND, Flacco throwing the interception when they had a sure field goal...WTF...oh well....another week for the Saints to hold the NFC hostage...HA...back to OT for the ATL vs. NY game...31-31 tie...first OT of the season I believe