To be honest i then wish i'd have a log trailer with a grapple to finish the job, but i didn't. Thinking about it....
When I'm doing firewood, I just cut it into stove lengths right where I've bunched the trees while winching them to the trial and either throw the rounds in a regular trailer, or bring my splitter out and throw the split pieces in the trailer.
For long logs, I posted a link in the "Tractors and wood" thread about the "DanG Deadheader Log Lifter", an inexpensive rig to load logs into a regular trailer over the tailgate. Check out
this link for the post. That thread also had a brief mention of parbuckling, which is another inexpensive loading method.
Personally, if I do one of these, I'm more likely to do the Loglifter than parbuckling. My existing trailer won't take parbuckling, which involves loading over the side. I also think I'm more likely to be able to get the trailer ahead of or behind the logs on my trails, rather than beside them (not to mention getting beside them with room for the parbuckling ramps.)
You could probably use your logging winch as the power source for the DanG Deadheader Log Lifter. I'm not sure if I'd want to use it as the winch for parbuckling: that takes a few pulleys to accomplish, and you'd want big diameter pulleys to avoid kinking or curling your logging winch cable - that gets a bit unwieldly.
