He attended two Green Bay training camps, and almost made the team, but an injury led Vince Lombardi to cut him.
At the end of the seasons, the Lions were eager to get the rights to the eventual CFL great and Hall of Famer Jim Young.
The Toronto Argonauts, with their new head coach Leo Cahill, were determined to turn their losing ways around, and in 1967, Symons was given a chance.
In addition, Symons turned down an offer from the NFL's Denver Broncos (in his home state) to stay in Toronto.
Unfortunately, their trip to the 59th Grey Cup ended in classic heartbreak, as the very same star, Leon McQuay, fumbled the ball deep in Calgary territory in the final minutes, a significant factor in the Argos loss.