the subject of a slot limit has been beat to death. there are 20+ million walleye in lake erie currently which produces trillions of eggs to be fertilized. The lake has changed from years ago and may not be able to sustain 40+ milliion walleye. The reality is, it may require fewer walleye in the lake to produce a banner hatch. Fewer walleye = more available food = higher survival rate. I believe the survival rate of the fry is the real issue at hand. Everyone thinks immediately that if you have more walleye, you have more fry, and you have more survival when you can actually decrease the survival rate with more fry if there isn't available forage to sustain the fry. Many factors involved here with the least significant factor being the amount of walleye currently in the lake.