hi jinky i am to looking at getting a trolley i like the look of the omnitrolley's but in my limited opinion i don't think it's best for me, i am domestic 100% and i don't like the idea of lifting trolley in and out of van, i know you can get ramps or lift trolley out empty then fill up but if not empty still pushing up ramps or lifting; having to keep re-filling would imagine a pain; you could fit a tank in van with a submersible pump and then fill omnitrolley from tank.
I've made a decision to go for a freedom trolley from adrew MCcann, if i find his website i will post his details.
the reason for this is cheap small pratical.
little trolley houses a 25ltr container you fill about 10 of these from your house.
when trolley has emptied, take out and just slot in new one.
spoke to him yesterday £995 inc vat trolley pole brush ro or di system,(ro is 100 gallons per day(400ltrs). he does bigger ro systems. you just need to buy 25 ltr containers as he supplies 1; £8.25 each and also a tank at home to house water 2x200 rain butts or ibc tanks.
what does ibc stand for (independant built container?)
also i hav recently been on ionics wfp course £111 very good.
sorry to waffle i think omnitrolleys are good but it depends on your budget as cost can soon mount up i think omnipoles are expensive but maybe you get what you pay for.
look at my recent post aquatrolley some guys have built own and will do for a fee.
all said omnitrolley is very pretty but i think freedom trolley looks professional for what started out as a diy system.
goodluck lee