OK, I did a search of many forums and did not find anything. This may have been answered before but, what is the difference between rolling stock/capacity and straight pulling with regard to winches? there are many winches and I know that a rolling capacity of 6,000lbs. can be doubled to 12,000lbs. with a snatch block. quote from a winch,

"Heavy duty winch gives you up to 9000 Lbs. of pulling capacity for rolling stock, 3,000 Lbs. for straight pulling."

But what is the actual difference? Thanks in advance.