Pond Boss Forums INTRO Questions & Observations planning a PB member Yellow Perch experiment

I've got some GSH which were stocked when the YP were stocked. Unfortunately I lost a lot of them right away, as they were attracted to the nylon netting in the grass mats I had put down in areas that I thought would wash. One would get caught and attract another one. There were 100s caught, like a gill net. Most died. I did catch a few last summer on small jigs, fishing for YP. I was surprised at how large they had become. I'm assuming they are reproducing. Probably wrecking havoc on my YP fry, from what I've read here.
GSH grass mat gill net..