4-3 defense question

Difficut question because it is very open ended, however, in our 4-3 scheme we almost always play Cover 3 only to a twins or trips formation with a nub end opposite the twins or trips. In this case, I have found the predicament to be how to drop your invert to receiver strength. One way is to get him to the flat fairly quickly in an attempt tpo get in the passing lane for the out. Or, let the invert carry #2 vertical (if you ask your CB to keep everything in front then the smash route puts the CB in a hell of a predicament because #1 on a 12 yard out will be wide open unless you teach your WLB to expand to the flat). Just a quick thought.