never had a van mount but all that hose seems awkward, i've a extend 2 wash 18ltr bp & its never failed i fill it right up & carry it by the handle no prob, tried a trolley for 2 days - found it awkward as well , i use wfp every day but not always all day & ive been doing it for about 5yrs and if you know how to lift then you shouldn't get any back probs - i mean for £150 its bang on