Rod, I've found rock crevice type structure in 0-1.5' water provides ample reproduction. If you have control of pond level then this type habitat is not a problem for seining. Also, if fertilizing, a pound of FHM adults turns into billions in one full summer and it's very important that you pull large quantities of minnows to allow room for continued reproduction. You almost can't fertilize enough to support the shear numbers produced without removing poundage.
BG, different story-in some ways. Gams seem to be or not be.. I know they don't do well with any shiner types, compared to without anyway.
As for depth I think having some control over temp will be important so in S KS, 5-6' may be needed in some % for FHM, maybe deeper for BG.
Shore slope will be depicted by aquatic growth rates and your habitat choice along with getting in and out of pond during seining missions.
