I'm a lightweight (6', 170), and a trick that works for me is to turn the handlebars to the left stop so that the end of the bar is closer to my body. Lets me put more weight in the right direction, and it doesn't seem like such a balancing act.
When I have the Corbin rear trunk installed, it's more difficult for me. I have to grab the passenger bar from inside, and the extra weight (especially when loaded up) doesn't help. But, as was mentioned before, it's STILL easier than my C10!