I believe a capacity plate was not required in 20' and above.
Found the following on another site:
http://www.boat-ed.com/fl/course/p2-...urcapacity.htm
"Although federal law requires capacity plates only on boats less than 20 feet in length, the National Marine Manufacturers Association (NMMA) requires a capacity plate on all boats less than 26 feet in order to be certified by NMMA."
Mine doesn't have one.
There is a rule of thumb on calculating the load based on lengthXwidth/15.
Granted cooler, fish.... need to be subtracted from this.