Norm, I don't really understand of the stocking SMB. You are just adding another Variable to this whole Equation. I thought the whole idea was to have cats as your dominate species the cats would sooner or later eat the smallies.
I tell you the truth for what you are trying to do Blues might be your best bet. Seriously, its not because I am such a fan of them. Blues tend to be way more aggesive from the jump than channels. You could stock them at as littel as a pound and they would be as predatiuos as LMB at a pound.
There are two things I would look out for. One, make sure you don't get the strain of fish that is not very hardy. What I mean by this is, people on this site seem to have had problems with catch and release of thier fish, but others did not have any problems.
Second make sure you can locate a steady supply of them, these fish can be rather be hard to find sometimes...
