May not help but, Why are you throwing a spinnerbait on 12lb flouro? I would throw 20 lb flouro or mono or 65lb braid. No way I want a fish in the type places I throw a spinnerbait on 12 lb line. Flouro is not real good when it comes to cover fishing in my opinion, could you be damaging the line after several retrieves and it just snaps on the cast due to previous damage since it's only 12lb to start with?