Ron, you could add YP, just make sure that they are large enough to avoid predation by your LMB, I "assume" your LMB are in the 12-14" range now. The problem is going to be finding a source for YP large enough to stock, if you can find 8-10" YP that would likely work this November. Blocking nets do work and can be utilized but that may take too much time to get the YP to a larger size. YP start having problems when the water temps start getting above 82-85 degrees, they don't tolerate the heat very well which would make me nervous trying to keep them penned up in 4ft of water or less during the summer months.