I bought up a bag of 100 1/2 ounce bullet-type worm weights with hollowed bases and make a lot of my spinners for Lake Superior. On these I use a gold plate #4 French blade. I like a compact spinner with a lot of flash and the gold plating meets that need while the size 4 blade produces plenty of thump in the water. The weight gets a flame red bath of powder paint. I don't mess with curing. Lake Trout, Kings, Cohos, Steelhead, Loopers, Herring...they all love these.
Andrew mentions getting the extra shafts for casting the lure bodies....I get an extra 100 spinner shafts and when a spinner gets bent or the blade wants to bind I clip the shaft and use a new one for a re-build. If the weight needs touching up, it gets that then too.