What the others said about overhead lifting.

As for the power supply, I'll presume you are looking at a standard 4wd
off road style winch. Check out the catalog pages he
http://www.ramseypdfs.com/Auto_Catal...ivecatalog.pdf
page 3 shows the current draw for a 9500 pound winch. Depending on the
load, it can draw 400 plus amps. Only way you are going to get this is
to put a big storage battery with some sort of charger. An automotive
battery will only be good for 30 to 60 seconds at full load before it
will start deteriorating inside. The diesel truck batteries will take
more abuse.

Steve B wrote:
I have a winch I can buy for $200 that is almost brand new. It is a 12v.
Vortec 9500 # winch. I can use it for some skidding I need to do onto my
trailer, but then, would hang it on an I beam dolly for hoisting. Since it
is 12v. what would I use as a power supply that would give me the same as
an automotive setup?

Steve