>>1616391get some bungey cords like this, where the cord goes through the head, you pull it tight, and then it cinches down
then you could just strap drybags on there. You wouldn't need to add anything to the rack.
the chicken wire wouldn't really be rigid enough to be that useful. You could also easily adapt any number of different bags to fit on there. Or even zip tie a tall narrow basket on both sides.
