I lift my 200 pound dingy and motor and contents regularly with my stock (teak) Albin mast.
Last summer I had it hanging during a torential downpour where I believe it accumulated enough watef to weigh 400 pounds easily. It had the boat healing about 5 degrees.
Not all trawler masts and booms are rated to lift much, But I will bet many can handle 400 pounds if not more. Now that may be above the "safe eorking load" but from a materials point of view, I think all if them exceed the 400 pound loading.
If you dont feel comfortable lifting an increasing amount of wright to see how the rig handles it....hiring an engjneer is expensive but one of the few choices you have.
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