With T3 it would be a lot easier or should I say familiar in how to do it! π
I haven’t tried it but if within the css directory, you’ll see different css for each device. Within the layout-mobile.css is some code relating to K2. I think following this would give you an idea about how to code for Kunena. For example you could set visibility to hidden or display to none on the mobile devices to ensure that the elements don’t show. How it would affect the front end I don’t know – I’ve just started playing myself.
Would be good for the forum and other users if you can post up results of what you try. I’ll do the same when I get some time to play properly!!
All the best of luck!