I found that my plan old 2 wheel dolly works great for moving rounds and quartered rounds. As long as there not too big.
One could get a tree dolly that could handle bigger rounds. That is, if you have the beans to push one around.
I have always wanted to mount one of those pickup truck cranes on my splitter to lift the bigger rounds right up on the splitter deck.
The problem is most of the newer splitters have the motor on the drop side of the splitter.
That puts the motor in the drop zone, making it vulnerable to damage.
I use different methods depending on my schedule but I tend to noodle first, then place my splitter as close to the pile and noodle and split as I go along. That way I figure, if I'm going to pick up a round, I'll just do it once to put it on the splitter.
But other times I noodle and dolly the rounds to a pile under a good shade tree for summer splitting.
In the winter, I move out in the open in the sun to stay wormer.
Skid loaders are great too but are expensive and costly to maintain, and they eat tires like crazy.
Skid loaders also tear up the ground really bad, especially making sharp turns.
Skid steer loaders with tracks are better but still have issues with wearing out the tracks and them jumping of track.
A tractor with a front loader has issues as well.
A tractor with the lift capacity to do the job are expensive and need to be fairly large to do the job.
Since I only have a small single splitter. It's better to just do it by hand one round at a time.
Besides, it like going to the gym. Giving me a great workout. Keeps me in good shape.