I have recently started to implement switchboard tags to connect our mobile and desktop pages, and to ensure that our mobile pages show up in rankings for mobile users. Because our desktop site is much deeper in content than our mobile site, there are a number of desktop pages we would like to have point to one mobile page. However, with the switchboard tags, this poses a problem because it requires multiple rel=canonical tags to be placed on the one mobile page. I'm assuming this will either confuse the search engines, or they will choose to ignore the rel=canonical tag altogether.
Any ideas on how to approach this situation other than creating an equivalent mobile version of every desktop page or implementing a user agent detection redirect?