Its just toyotas attorneys requir3d sticker to keep ppl from killing themselves. Locked trucks steer much differently. Thats it.
Instead of the inner rear wheel spinning faster around a corner and aiding to the turn, the entire rear end just pushes the front around more.
Drive it slower locked, get a feel for the turning aspect being locked. Then increase mph from there.
Just dont lock on hard surfaces... def dont want to lock onroad and turn, thats gunna spit out seals.