To my WE Alpine Expedition
I have just spent a few minutes with a needles and some heavy thread and modified the detachable WE back pocket.
Just some time, webbing and some plastic buckles.
Now I think it will be easier to use the back pocket with a shovel and it should act as a secondary compression aid as well.
The extra buckles on top and bottom fix it to the shoulder harness of my bum bag to give a very small extra capacity