<font color=blue>I think that I will be going with the regular duo- grips and my soon to be loaded rear tires. If I need some additional weight, I have some ideas for a couple of different ways to add weight to my rear blade.</font color=blue>
If you want more traction, adding weight to your rear blade won't do you much good, once your rear blade is on the ground (unless you plow your snow with the rear blade raised a bit off the ground?) It may help you get your blade to dig in a bit better when you are trying to scrape up ice, for example.
John Mc