Todd - Selective breeding like you suggest is theoretically possible. Several studies recently have demonstrated a genetic link to catchability, not only between strains, but within strains as well. And Texas has been breeding lunker bass to lunker bass for some time now hoping to skew the genetics towards fast growing fish.
Of the biggest 20 bass taken in Texas waters, all were Florida or at least had a significant proportion of Florida alleles. My *Guess* is that they are primarily breeding Floridas, but that is only a guess.
The idea of trading small bass for services is an interesting one. When removing bass using angling, you catch and remove the "biters," and leave the "non-biters" to grow and spawn. By managing harvest using electrofishing, you would be randomly removing fish regardless of their aggressiveness, and should not be influencing the catchability of the remaining population.
