Exactly. Offering to extract a car from a ditch just opens yourself up to potentially serious and/or expensive problems that could easily make you regret trying to be a good samaritan.
And if you buy 1/2" bolts to secure tow hooks onto your TJ, the thread size is 13 so they'd have a 1/2x13 thread. Make sure too that they have a Grade 8 strength rating. Up front those bolts would replace the two pair of bumper bolts on top.
In the rear you can attach them like this... one of those bolt holes is already present, you would only need to drill one. Make sure NOT to drill through both sides of the frame at the rear. Just ONE side. The washers and nuts go inside the frame, there is an existing slot under the frame at that point you can fish the nuts and washers up inside through. You do NOT want the tow hook bolt passing through both sides of the frame where it would start pulling the frame sides in toward each other.
Those six 'tic' marks on the below bolts indicate they are rated Grade 8.
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