Other Pro Set FormationsTeams that run the option out of a Pro Set use a variety of formations to gain an advantage. Below are some of the more common formations used in this style of option football. Split Back Twin Formation I-Strong – A formation where the fullback is offset to the strength to allow for a quicker release or a different angle for his block. I-Weak – Offset the fullback to the weak side. Power I – Replacing a receiver with another Fullback to compliment the power running game and have more misdirection in the option game. Power I Weak – A combination backfield using aspects of several different sets and replacing a receiver with a second fullback.