many places,
late at nite barrack street jetty,
point walter car park,
kings park, burswood foreshore, south perth, east perth is a great place if u can get the rite timing thingo...
if ur willing to travel, aruleuin(however u spell it, its in the hills near roleystone...)
canningvale, the new estates, theres a couple of places...
beaches and freo port,
like teejay said, jus drive..u'll b amazed wat perth has to offer