Here is how I easily hook up a Gorilla Garden Cart to my Schwinn Meridian E-trike. I used the trailer to pickup and handout food to our local homeless people.
I have been ordering them from China through aliexpress. They are the 'amazon' of China and hold your money until you receive the goods... then they send the money to the vendor.
Thanks for the tip. I've used bike trailers before with my Meridian etrike and some didn't hold up to well to the weight, the wheels actually bent and were ruined, so was wondering about the bearings in yours, do you think they would hold up to road use? Im thinking the wheel structure on yours would work much better with the weight.
Look into a Burley trailer hitch for bikes. The hitch themselves are cheap and gives you something sturdy to attach to. For anything heavier, I would use cargo straps instead of stretch cord.