I used a Bagman sport for years on mixed off-road trails. Not problems at all.
There's a nice hack I use for all my Carradice saddle bags and that's to loop a shoelace with a sliding toggle on it around the Bagman rail and then clip it to the plastic D-ring inside the bag using a cheap carabiner.
It totally stops the bag from bouncing around on the rack.
I used a Bagman sport for years on mixed off-road trails. Not problems at all.
There's a nice hack I use for all my Carradice saddle bags and that's to loop a shoelace with a sliding toggle on it around the Bagman rail and then clip it to the plastic D-ring inside the bag using a cheap carabiner.
It totally stops the bag from bouncing around on the rack.