Yes, the manufacturers, published Dry Weight
does not take into account the weight of the outboard engine, gas tank, water in the tank and other equipment and stuff you may have added. A wild guess would be 700-800 lbs above dry eight. That would put the boat at around 3,200 and a two axle galvanized trailer should be around 1,300 so I would consider abou 4,500 lbs for the whole rig. Stop at a truck station and weigh it (a small fee) and you'll have your answer.