I have been running cheap portable tool boxes on my tunnel the last 3 years after having poor luck with expensive tunnel bags either falling off or getting soaked. They have actually worked extremely well. I have never had one come off, and my things have always remained dry. Only fault has been the latch systems arent great so I zip tie them shut and only put survival gear that I dont PLAN to use in them. I have just drilled 4 holes in the bottom of them and used carraige bolts to attach them to the tunnel tracks. I am going to upgrade to a pelican case (2450 storm) this winter and was wondering if anyone has any good ideas for attaching one with somesort of a quick release system? Are the polaris lock and ride latches something that could be fitted to the inside or outside of the case? I see polaris sells them individually, but I have never been around them. Lets hear some ideas.