I've chosen Locke as a main party member, And by doing such I've made it my mission to fully understand the Thief. I've done some hunting and found very useful strategies and combos to maximize Locke's thievery.
Some pretty good math and in depth stratagem here for maximum Steal,Capture/Mug and comparisons of the early Genji-Brigand-Thief's Bracer Combos. Thought I'd share with other robbery obsessed thieves out there:
final fantasy 6 - What's the most effective way to steal inside one turn? - Arqade.
Maybe someone will find this helpful!
Thanks.