i've been filling the back of my 960 wagon with snow so we can take it to handrails and hit them on snowboards. we fold the seats down, line the back with a tarp, and fill it full of snow. i've been thinking, a full load of snow is a LOT heavier than most anything you'd normally put in there, and the back sags really low, you have to be careful driving it. my question is, am i going to hurt anything simply by putting that much weight in it? obviously it's easier to bottom out over driveways and stuff, but if i'm careful driving it, am i going to break anything? thanks for any thoughts.