I don't get this Spring football business. The football offseason is for strength training. If there's no offseason then when is training supposed to happen?
I met a young guy at my gym recently who was a standout HS football player at slot and safety. He's in his early twenties and had never touched a barbell until he joined the gym a few weeks ago. Maybe this is the future. Leave the serious training stuff until after the HS football nonsense is over.