Sandbags in pickup bed, placement?

Over the axle. I like in northern Wisconsin. I have sand bags(4), that go
in every winter. I put them right over the axle.
Make a box to fit tight to the wheel wells. 2x4s or 2x6. Use long drywall
screws to put it together. Hang on to it for next winter.
I have a 2wd Dakota, I can go anywhere with this and a set of winterforce
snows on it. They are like Blizzacks.
Take it from one who deals with it every winter.
It's just the 3 months of hard sledding in the summer. LOL!