Love the pic. Not sure if you are serious.
If you are, get the rig weighed - the whole thing. Also, get the truck and boat weighed.
My guess is the truck is not overweight since the boat is the only thing being carried on the truck. Compare the truck weight to the truck GVWR.
The real question becomes Gross Combined Vehicle Weight Rating (GCWR). I expect you are well beyond the GVWR!!
The old adage, If you must ask if you need more truck, the answer is almost always YES! applies here.
Note to others: This is a F350 dually or F450. The FW is on a dolly, so no pin wt in the truck.