Yes, we do this all the time here in New Zealand.
Two 8274 winches under the deck
Twin motor 8274, widened drum, in-drum freespool
Front view
Fairleads
Note the intermediate guides.
There are a few basic things that you need to do when you set up a rear mount winch. It doesn't matter what type of winch you use, electric, PTO or hydraulic these comments apply. I've only ever seen synthetic winch rope used on a rear mounted winch so these comments apply to synthetic winch rope.
The fairleads/guides can be flaired tube or plain tube with UHMPWE inserts like above. You can use a length of seamless tube to run the winch cable in. My winch is mounted right at the back of the chassis and has an S shaped length of tube to move the rope to the chassis rail. Another mate of mine uses a reasonably straight length of pipe that passes throught the cab diagonally under the passengers seat, through the engine bay to the front of the truck.
Make sure the last guide before the winch is at least 800mm to 1m from the winch and in line with the cente of the winch drum. This will ensure the rope feeds on evenly.