I pour wort through funnel into Better Bottle, put a tennis ball under the center indent in the BB and swirl it.
like this http://www.better-bottle.com/products_master.html
I have been pondering this for a while the Mix-Stir, are sold as wine "de-gassers" so if it it's degassing wine how is getting oxygen (which is a gas) into the wort?
Mix-stirs are also used on mead for the same reason. You get a large amount of foam after a day of fermentation when you de-gas. You also get a whirlpoo/splashing action that helps get the O2 from the air mixed in. This is a "direct acting stir plate", same gas exchange happens as in the flasks on a stir plate. But faster.