First, look to avoid all props that have multiple results possible. Turn the odds into a probability percentage (like 3-1=25%, 4-1=20%, etc.) add them up and some of these things are at 180% (an 80% takeout) or more.   Look to bet yes/no, over/under, team vs. team, etc. You can find good things even with 30 cent lines (the equivalent of -115 on both sides).  The juice built into bets like “first player to score TD” and “margin of victory” is enormous. 

Secondly, take your weak books and compare their props to what the lines are for the same props at strong books that have been hammered over mutliple days.   You can find bets that are -170 at a sharp book that your weak or local book has at -115 for the same prop.  I find good plays every year simply by comparing and contrasting. Good luck in the Super Bowl.