i'd have to agree here. i liked that game with wario (and still do when i can ever get it to play correctly WITH sound in a emulator) but as far as using it goes, i think theres a episode of AVGN on youtube that has a review of it. basically the thing was too cumbersome to use and laying down on the floor (or if you somehow fund something with just the right height to set it on) would make your neck hurt trying to use it.
i remember way back when i had one, i'd lay on my stomach with it sitting on the floor and would almost always end up with a aching neck afterwards. :/ nice concept, just poorly designed console (handheld?)