I need to do something because I can't stand 4 hours one way in my car to Lime Rock. I have a Kia Sedona that can tow 4k but like I said I've never towed anything and it seems overwhelming to understand all the tips/rules/necessities for towing.
That’s a significant drive, but I totally understand. I guess the point I was making with the Uhaul is that just like driving a car fast or doing anything else, trying to push the limits is that towing 4000 pounds behind a truck with a 6-8k tow capacity, longer wheelbase and stiffer rear axle is going to be a bit more forgiving than setting up your vehicle to tow at 10/10ths if that makes any sense.
At very least I’d try renting both setups once to try it out, maybe starting with the uhaul truck so you’re starting out in the shallow end or try hauling something lighter that’s not one of your favorite race cars in a small trailer behind your Kia (good excuse to do a big cleanup and haul stuff to the dump?)
Nothing inherently wrong with learning to swim in the deepend, but the consequences are bigger. For example I remember when I was younger, my dad (who already had decent experience towing) was trying to tow a decent sized boat on a trailer with surge brakes that was *supposed* to be rated for it, and for whatever reason, couldn’t get it to stop bumping back and forth and engaging the brakes while towing. Tried many adjustments and at one point after a gust of wind ended up with the damn thing whipping side to side at freeway speeds. He got rod f that trailer really quickly after that.
Speaking of which, read up a bit on how to drive with a trailer, because there are some important things like “if something is wrong, hitting the brakes is often the worst thing you can do - coast down instead”. Towing can be either really boring or completely terrifying without a lot of in between, but either way it’s still serious business and different than just driving even a large vehicle.