Rodney,

Seems like you are having quite a time getting your mobile version working the way you want :)  One way you might be able acheive what you want is to use a little JQuery combined with checking the user agent in the skin.

Steps:

Put your banner on the page, wrapped in a div with a specific css class that is set to hide the div. (say "mobileonly" )  You could do this in an html module or even create a seperate container.

In your skin Onload or init event, check the user agent and set some flag (boolean, isMobile) to true or false.  Then use that flag to set the correct Jquery function to show or hide the divs with that class.

That should do it.