Headed for the Mountains
Join Date: Apr 2005
Location: North Vancouver, BC, Canada.
I used to have a set of 404s that I used with leather climbing boots to access ice climbing areas... long slogs on snow covered roads, just like your proposed ice fishing trip. Perfect binding for the job.
I don't recall my bindings having any slop, but I can certainly imagine that any sort of torsional force on them, especially in touring mode, could lead to that.
For the DIN, as Zoran suggests, I would dial them back to the lowest setting that doesn't result in any unexpected releases, even in touring mode.