I found this on Expo the other day. It’s a bracket that fits on the the tongue of the Hi-Lift jack and enables the jack to grip bumpers and round or square tube without slipping. When I’ve jacked my truck up by the rock sliders on a flat surface, I’ve had to be careful to ensure that the jack doesn’t slip. In a rocky situation it would seem too dicey to attempt. With this though, I think it’d be a safe maneuver.

JakJaw, company site
Expedition Portal, Gear Scout: JakJaw