Thanks for the advice man i think i will go for the two pumps and just have one of them cold, if the hose freezes on the floor i will use the backpack etc for the second person.
i had a doblo 1.3 multijet 16v, the timing chain snapped ! i was driving along all of a suddern the oil light came on then a crunch an that was it, im having a second hand engine put in at a cost of about 1200 all in so i am going to have the second van as a spare, i have been caught out so mny times with vans of the road im just going to run the two of them, i know more expensive but ill not be left not working again :-)
the doblo i think is a great van everyone has said to me its just unlucky, your very unlikly to have the same thing happen to yours :-)