Twitching Jigs and swinging spoons don't work so quit talking about them.

If I WERE to twitch a jig, I'd stick with a 3/8, 1/2, or 1/4 ounce for the water I like to fish. 3/4 ounce jig seems a tad heavy. And the same ones fished under a float can be used for twitching but your right, if you tie your own, the possibilities are endless and you can create/fish something that nobody else is using.

One more thing, fish will almost always take the jig on the drop, so give plenty of slack on the drop, and when you come up, if you feel any hesitation, it is generally a fish so continue forward on your upward motion to set the hook.