Hey @Alphin Aloor! Some good questions raised and I’ll just provide my two cents based on my experience owning a winch for 4 years and having owned a Patrol but never installed the winch on it. I kept the winch on my small Pajero and later onto the Trooper.
First question for yourself should be: are you planning on doing regular recoveries of others ? And are you currently comfortable recovering others with a kinetic rope? 90% of recoveries can be done with a rope, and it’s only in a small amount of scenarios that a winch comes in handy. I have used my winch perhaps 15 times in 4 years, and it was a lifesaver a few times, but the main reason I got it was for being able to do recoveries in remote or challenging areas like Liwa. As a drive lead there’s always a bit of apprehension when leading in this terrain that something could go wrong and having the winch always gave me that extra bit of reassurance.
If you plan to install it on the Patrol, take note it will slow you down further a bit during climbs, and the nose of the car will bottom out a bit faster on typical dune bashing drives on stock shocks. If you focus more on overlanding, then this is less of an issue.
Have a look at the OEM winch install setup which some Super Safari models have. This would keep the bumper intact and hide the winch properly. If you want to buy a winch and get custom brackets made, I can of course recommend Warn or TJM winches with synthetic rope. Better to avoid steel rope as this again adds weight.
There is little to no maintenance on a winch, but a couple of times per year it’s good to completely roll out the rope, inspect it for any damages, and then roll it back up.
The Patrol has a big size battery already which can easily power a winch when needed, so that’s a plus.
All in all i got the winch installed from a personal perspective as a drive lead / marshal. Would it buy it again ? Maybe not. I got a great deal as mine was second hand and only 3 weeks old. The guy sold it as he installed a steel bumper and winch and then realized the extra weight in front completely changed the dune bashing experience for him, so he decided to remove it again.