If you haven't been going through the scales already, you're good.
If you have business ads on the tow vehicle with a phone number, you could be at risk, remove them if they are magnetic. While you can tow for pleasure using a work truck, you might get stopped and have to explain. If it's just a pickup with no business markings, the odds are very slim you'll ever have an issue. Kinda like getting your tank dipped for off-road diesel. Sure it can happen, it's just very rare.
Guys with medium-duty and larger tows are usually the target. Put a phone number on them, and you'll eventually get stopped. Put a NOT FOR HIRE - PRIVATE USE ONLY sticker on. If you've got 5 horses, cattle, or 3 cars in the trailer, you'll probably have to explain it in court. And you'll probably lose.