Super lightweight, like under a pound - KDC tripod. Should do you for 300 yard work.
This is also what I use when backpack hunting, I think mine weighs all of 13 oz. I have Leupold gold ring binoculars that don't have a threaded spot for a stud, so use their rubber/velcro setup which actually makes for a pretty decent rifle rest
If I thought I would be shooting 500 yards (which I don't ), then I would go with a different setup