I agree with rangieman, about water proofing, you can get by without it, its just extra work in maintenance.
But once the water is in there it is hard to get it all out quickly, some of it condenses again as the winch cools down.
The electric winches do work under water no problem, and drying them out is the go.
During my last overhaul, I drilled and tapped both ends of the winch/motor, and connected hoses to them.
I can blow air in one end and out the other, my plan at the time was to have a solenoid & pressure regulator connected to my air tank, to supply at at 2 psi via a canister filled with silca gel. ( a work in progress for 5 years

).
Before a deep crossing I could open the dry air into the winch to reduce the amount of water entering, and then leave the air on for a few hours while driving to dry the winch out. Silica gel can be refreshed by warming in the oven, it's not hard to get or expensive.
If I could have only one winch it would be an electric one, just from the point of view its easy to use and will get you out of 95% of the problems. Sure you can't winch backwards, but that's the only advantage I can see for a hand winch. If you follow the makers advice regarding the battery capacity, you should be OK. It's hard to exceed the duty cycle of the winch, even in difficult situations because you have to be constantly re rigging the winch to different points as the recovery progresses, it gives the battery and the winch some recovery time, I never winch without the engine running.
I used to almost always be alone in the forest , because of my work pattern I had time off during the weekdays. I got stuck a lot because of the terrain and the trailer/ weight. I couldn't have got out of some of those situations with a hand winch because of the amount of physical work required. A couple of times it took me 2 hours of solo winching and re rigging to get out situations. I was very tired at the end of it. Have fun cheers simmo.
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