I figured out a way to get an approx weight on mine carefully using a Sherline scale with a 0-5,000 meter.
See my post in this forum. I found that I had approx 4650 lbs on the axle (single axle hubs/brakes 6,000 lb capacity, springs 5,700 lbs capacity, load range D tires 5040 lb capacity) & 410 lbs on the tongue.
Based on these weights I would go to a load range E tire next time I get tires. That will give me around 500 lbs reserve capacity for each tire. Without weighing it you will never know if you are overloaded which explains partly why there are so many trailer tire failures and relatively few on tow vehicles. Your truck is set up with 20-30 % safety margin for the tire capacity whereas trailers are often at 10% or less or overloaded. But because there is no legal requirement that boat companies provide accurate weights as their is with vehicles you may never know unless you find out yourself and it should not be that way. Tires being overloaded or marginal was fairly common on vehicles 50-60 years ago in fact Consumer Reports used to publish tire reserve capacity as part of their road tests. Boat trailers and RVs are still stuck in the dark ages of accountability as far as I am concerned, and BTW there is not ONE Cat scale on all of the 110 miles of Long Island that includes all of NYC. Very difficult to find a weigh scale here.
