Well guess it's time to chime in. Frankly I have standards within 2 categories - Tacos & Hammers. I am always fishing for Hammers these days, I keep quality Tacos as a by-catch. I don't target Tacos anymore. The few on this site that have fished with me know I throw a bunch back. I like to judge a Taco before tossing into the cooler, I turn them so I can look at them along their back. If the fish is 11-12 inches but poor - skinny I toss them back. If it looks like there is no meat up near the Dorsal fins I toss them back to gain weight.