Okay, that's a great idea and I'd be willing to pay the premium.
Since this strategy depends on sexing fish, are one species more reliably sexed than another? Could I also consider LMBs? That would be a blast, and I'll likely find a supplier of LMB easier than one of YP. Most of the hatcheries here in New England specialize in Trout, but I have located one that provides HBG or LMB down in Mass.