Big spoons work well for big northern pike. There are several models on the market that work great for casting or trolling. The 1/2 to 1 ounce sizes will usually be big enough for most manufacturers. The bigger, heavier spoon also means fishing shallower is tough, so you’re going to be fishing a little deeper water to keep these lures out of the snags and weeds. The heavier spoons work great in that 8 to 20 foot depth range. Some models can be fished shallower while others work best in deeper water.