Sadly you don't tend to see a lot from passing trains, particularly travelling in from the Southampton direction. Just a quick glimpse through the bushes, but not worth making an epic journey for. You'll see a bit more travelling along the Botley road towards Fareham, but again it isn't a great deal. A few tatty ex-Virgin MK2s and maybe the odd visiting loco is pretty much it usually. You might be better off taking a walk over towards the site and peeking through the fences etc!