I don't trust the spare tire winches. One morning I went out to my 20 year old van and there is the spare laying on the ground under the van. I shudder to think if that happened as I was driving down the road.
As far as easy removal of the winch and spare pedestal, how about using an old Reese reciever. Then you can take it off or put it on with just one pin.
That is an option I hadn't thought of. Thanks!