Originally Posted By: Hacksaw
That's the kind of rig I want to make for touring. It needs to be low enough to pull behind my new folding bike though so I can use it to run errands around my condo. If it attached high like the one in the above picture it could pull the bike over backwards! I think I'll have to make some kind of hitch thingie that bolts to the frame.

It shouldn't happen if your weight is over the center of the bike, unless the trailer is really, really heavy. The exception would be while climbing a steep hill, when a more moderate weight could be a problem. In that situation you might want to position your weight more over the handlebars
All we can do is all we can do.