ooooh there are some nice things being manufactured at the moment . i'm ordering one of these .
http://www.ebay.co.uk/itm/Yamaha-XS650-sump-filter-/130835645600?pt=UK_Motorcycle_Parts&hash=item1e766984a0
http://www.ebay.co.uk/itm/Yamaha-XS650-sump-filter-/130835645600?pt=UK_Motorcycle_Parts&hash=item1e766984a0