[mention]hereinaz [/mention]is being modest. I’d go pickup some bags from him at lswild.com. I have been using the backcountry hunter combo. They’re insanely light but work phenomenally. I have just been using a few 2x6s under the front bag. The rear bag is under filled so you can really manipulate and squeeze it like you’re supposed to.
I’ve tried these Caldwell bags and they work, but whatever fill you use will end up sucking somehow. Rice is ok but rots if wet, sand is just too heavy. Cat litter is ok but it tends to turn into a brick over time… spend the money on a decent set, you’ll use them forever.