To use the gutters as drawers is a neat idea, I like it as well.
I found that the standard hose gets very stiff in cold temperatures. Maybe the better brands use material that does not stiffen as much. I still use the standard one, but I made myself a longer storage tube from a thin wall drain pipe. The old storage tube was cut in half and the pieces are glued to the ends of that pipe so I can close it off. It's all is mounted to the frame under the gas tanks and battery
. The slinky does not have to be compressed as much when stored and therefore is easier to stretch when needed.