Yep, optimate is the way forward...
Working away a lot myself, and on the occassions i get 'ome just go pick up the bike, unplug the optimate and a full charge is waiting for me to poke the button!
Sweet!!
Haven't noticed any decrease in overall battery life either, cos as I understand it a battery will stay good all the time it's got a full charge. Well worth shelling out fifty quid for IMO.
[Edited on 14-3-2004 by NBs996]