You can't beat BnM Crappie Poles. I use the 10-foot Crappie Wizard Richard Williams Signature Series poles for my slip-float rigs and 11-foot Buck's Best Ultra-Lite Jig Poles for pole-in-hand fishing. They stand behind their products and offer replacement tip sections so you don't have to replace the whole pole if you damage and break one.
They also have rods for casting, dock-shooting and trolling so no matter what methods of crappie fishing your dad uses they have the right pole.