First of all I dont want this to sound like a flame....but boxing makes you weak? I guess thats why so many people get knocked out in boxing....from weak people hitting them. Think about it...they arent going to be bodybuilders (although for 40yrs old evander has a great physique) but if you are...
I almost totally use instinctive training. Albeit I do have a set "schedule" for my workouts i normally just feel my way through them when it comes to my exercises i do. I feel that if you stick with your basic compound movements you can make good progress when you change your assistance...