"and that most of the giants caught in California are also hybrid crosses."

I don't think that is the case as some of them come from smaller reservoirs that were stocked by the state with only pure Flas. I have some Calif data if I can find it.

In looking at data it is a must to keep it in context. Think about this. The Share-a-lunker program consists of caught (angling) fish. If , as is shown, Fla LMB are less aggressive and exhibit a less catchability trait than Northern or F-1s then the #s of caught fish would so indicate. In other words that data does not prove that a higher % of F-1s get bigger than Flas but only that they are more apt to be caught. It does prove that F-1s can get big also.