I had Greg Wheelwrright (boulderbikepacking) build up an oversized tank bag
similar to the one he made for Jesse Carlsson’s 2013 TDR run. I had him mod & add a few features but the rain cover is I think the crème de la crème.
With one hand I can pull it up
and tuck it out of the way
, access the bag and then easily reposition it. Also when I stand and brush the side of the bag with my legs it’s nice and smooth.
Works great--I really like it.
You should get one........