Once again Call pocket and Slop are not the same thing. Call pocket you need to call the ball and the pocket. Slop is the APA rules all you have to do is hit one of your balls first and if any one of your balls go in any pocket you continue your turn. That is Slop.

The 8 is the only time you need to call and mark a pocket, but it can still get to that pocket any which way.
My league plays Ball and pocket. However instead of Ball in hand on bad hits we use the 3 option rule. Ball in kitchen, Play it from were it lies, or make the other guy shoot again. If your only legal ball to hit is also in the Kitchen you can reguest the closest ball to the bulk line to be spoted.