I have an F1 on my truck and it has not come loose off road yet. I did have to adjust its position after SDBR and a Michigan run. It slid a little forward each time. Definitely not taking it easy on the truck off road. Huck is spot on with the struts. May as well take them off before off road trip and put them back later.
I like my F1 but still might go a different route soon. Either no cover or a retractable cover.
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