I was just going by my experience, the RBS caught out of a few local rivers average bigger size than bluegills I've caught out of ponds/lakes around here. I'm sure you're right about BG being able to outgrow them in ponds though if the conditions are right. I caught about 15 bluegill out of the small .2 acre pond here today and transfered them over to the larger pond. They were between 4-6" with most on the smaller side. The smaller ones were skinny looking but the larger ones were pretty thick, in my opinion. I know that's not a very big number of fish but I think that any additional spawning will help in the larger lake and I'm going to try to get as many as possible out of the smaller pond before they spawn there. I'm going to pick up some worms and try again tomorrow, I should have better luck with them than the artificials I was using today. I also caught a 5" crappie out of the small pond. I think it was a white crappie but am not 100% and couldn't get a picture of it. No RES caught there today.
I also think I'm going to go ahead with Dave's recommendation of removing some LMB from the bigger pond. While I don't think there are any stunting issues with them right now, I don't think taking some out will hurt as they seem fairly easy to catch right now. I'm thinking of initially removing 50 in the 7-11" range and seeing what kind of effect that has on fishing before committing to removing more. I'm not sure what to do with them though, I could eat some of them but after I'll probably end up with a good number of trout in the freezer after I fish them out. I think I may add 10 or so to the smaller pond to knock down the panfish numbers as I have yet to see or catch a bass over 6-7" out of there and there seem to be a lot of smallish, thin BG. Hopefully they'll also eat any LMB spawn and keep them from stunting as well.
