That's not why unions exist. But if providing a reasonable standard for compensation and working conditions for everyone engaged in the labor market isn't a priority to you, hey that's cool too.
Many boat manufacturers
10-15% is the generally accepted range for safe towing here in the US, but there's no statutory minimum and plenty of boat trailers are designed below that (eg ShoreLand'r suggests 5-7%) so there are benefits to maxing out the tow rating in excess of 10X tongue weight...