And, you can anchor the truck to a tree or others secure it.
A parking brake is only for two tires.
When I used my truck as a retainer line anchor, I wedged the brake pedal with a cut-to-length round of wood with truck running.
I've broken one old, old rope on a hard pull on a log off a spar in a no-risk situation. Log just sat back onto the spar. Another rope pulled it off. Working solo, nobody in the tree.
5-6 years ago.
Rope angle and 4wd affect traction and load to the rope. Momentum/ dynamic versus steady, more-static pulling affects peak force. Rope Elasticity affects peak force.
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