rhcohen2014 said:for a good example of another family who has had recent success with this, read this thread:
http://www.canadavisa.com/canada-immigration-discussion-board/help-i-think-im-screwed-t202919.30.html
I just read that one myself. But the difference is that 'Dad' went back for the uhaul AFTER he crossed the rest of the family into the country. The OP here is talking about his first crossing being in a Uhaul full of stuff. You can't always count on the border guards being reasonable, sadly.