It is hard to get a visual of what you are describing. But if your coach has you doing squats, deadlifts, and behind the neck presses, he knows what he is doing. He is building strength, and since football season is now over, this is the time to build strength, gain speed, add muscle, drop fat, etc.
They are all very reliable predictors of applicable strength. The behind the neck (btn) presses have more use than bench press. Hopefully he will work up to things like the Power Snatch, Clean and Jerk, Push Press, shit like that.
Listen to him, you will thank him when 6 months from now, you are most likely bigger, faster, and stronger.