Like Jim said, a Thermometer helps bou'cou'. I was using MF before switchin and I find you have less room for error in your temps with it. Now I pour at surface temp in pot at 326-332 for one pc molds. Will be higher with the MF.
Also I did test pours on Bears mold for that lure, and it swims awsome, I am not a bass fisherman but action is great and easy to pour.