whats the point in using a trolley when you have a van mount? i dont like flat tanks the 350l flat isnt that bad but the 250 and 400 are not very tall and suffer with air locks a lot,
dazmond hope this gives you an idea, my tank is a 350l upright in a fiat doblo cargo van secured with two 5tonne ratchet straps bolted with anchor plates to the chassis, reel is secure down i dont tend to take it out when i do jobs but it is quick release so i can if needed, battery is behind passenger seat and the controller has the battery charge facility so i dont tank it out to recharge it.
easy and does the job same as many stupidly overpriced fitted big name systems for a fraction of the price, i will however be making some tubes to put the poles in through the bulkhead attached to the roof so its not quite finished yet