numberFire's Jim Sannes wrote a very useful article in January on how kickers performed based on measures such as Vegas spreads, implied totals, and favorites versus underdogs. Based on this, we need to target kickers on heavily-favored teams, with implied team total as the tiebreaker.
In Week 14, Matt Prater and the Detroit Lions are favored by 7.5 points against the Chicago Bears, the largest spread on the slate. Sannes found that kickers on teams favored by 5-9.5 points scored an average of 8.74 fantasy points per game between 2012-2014.
Their implied team total is 25.5 points, and Jim's findings in this area show that teams with an implied total ranging from 24-26.75 scored an average of 8.77 fantasy points. Prater only has one game of less than seven fantasy points this entire season.
He was the top kicker in Week 13, so he will be highly owned in tournaments and has the fourth-highest salary on FanDuel, at $4,900. With that price tag, he's only worth targeting in cash games.