The easiest way to understand what I did for the rudder mod is to look at the picture in Post #2 of my thread.

I have seen another pilot hover a SSE and with enough throw and an aft cg the SSE can do a flat spin (but IMO not real well). It really isn't a good platform for 3d flight. I did the mods simply for the sake of goofin' off and making the plane perform certain aerobatics with more authority (knife edge manuevers). I think most people will agree that for 3d you'll want something a bit lighter.