Yeah good point Neil, are you thinking of going far from it then? I've only used tripods (so far) in car parks and the like when no-one else has really been around. sure i've had to move a car or two around to get the right angle for the shot, but its always been not far away.
Guess maybe its the whole night-urban shoot thing again with 'bring a mate'

anyway, let me know how you get on and what approach you take

Maybe someone else has done this already?