Re: 1991 18ft trailstar trailer 24ft pontoon
As you can see your post isn't complete.
My first concern is the weight of the pontoon. Then the balance if you extend the tongue.
The rating of the trailer should be on the tag.
How much water would be needed to float it off the trailer?
How is the boat supported? Some pictures would help.
The boat could easily weigh 2500 lbs dry,probably way over 3000 all setup.
Don't forget any modifications to the trailer could change its rating.