The front one is likely strong enough, but there are considerations with using a hook in that location. It's about 3-400mm higher than the equivalent chassis point, which doesn't seem like much but can transfer a surprising amount of load in the form of down pull onto the front end which is adding weight to the front suspension components. My preference is to have that style hook down low, bolted directly onto the side of the chassis rail using some of those bolts that you identified in the photo. If access is a concern, you can get a keeper spring and fit a short (500mm long) 3 ton soft webbing link which means you don't have to go grubbing in the mud to hook up to it. Just leave it securely hooked up to the winch or something like that...
The one at the back is a nup for me, might as well just use the bloody towbar looping a tow strap around the towbar extension in front of the towball nut (not using the towball for safety sake). Relying on a pin and a wiggly piece of square tube for snatching is a recipe for doom and despair, as the forces can crack the tube at the corners or bend the side walls of the tube extension or even tear the walls of the tubes where the pin goes through. Better off hard bolting the recovery hook to the back end chassis in a similar method to the front end, as low as you can get.
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