The rack on the front end of the trailer only gets used for firewood. The top is 2" sq tube. I slid a short piece of 2-1/2" tube over it when I was building it., then welded a couple of ears on it sticking down. Drilled a 9/16" hole through one ear and tapped a 1/2-13 hole in the other side. Run a shoulder bolt through it and hang a snatch block down so that it gets my winch cable up higher. I also drilled a few 3/8" holes through the top of the square tube in a few locations. I drop in a 3/8" bolt to keep the sleeve from sliding towards the center. It allows me to pull a log towards one side or the other. I would never use the front rack to load a large log up onto the trailer. Those black locust logs (only 8' long) are about as much the front rack will handle. The rear arch, even though it is now bent, had no problems getting some bigger stuff up on the trailer. The ones in the pic below were loaded and hauled one half at a time because that's all my 13K winch wanted to do, even with the snatch block on the arch.
I have one spindle that has some minor scoring on it. I've thought about upgrading to a larger axle and tire, mainly so I could use my old, worn truck tires. So long as I buy a quality tire, and not the cheapest D rated tire I can find, and I keep those good tires fully aired up, they do fine for my needs. I'd estimate that my normal load of firewood is around 9K plus the trailer weight. I also haul my firewood about an hour, only because it's close to where my folks live, I have nearly unlimited access to the property, and it's loaded with shagbark hickory and white tail deer
Still, pulling that trailer through the creek and up out of the bottom always makes my rear end pucker. The old 7.3 gets the job done, but I'm always nervous I'll slip a tire and dig a hole... fast...
I've had no problems with the synthetic rope on my Xbull. Having said that, if I were making a living with it, I'd at least have a Warne, but most likely I would have found a hydraulic setup. I'm normally getting 2 or 3 trailer loads of hickory each year for firewood. My $400 winch will die at some point. When it does, I will replace it with another.