hi there my boat have a solid floor, but I have to pull the gas tank I remove the square cap and inspect under the tank, in front and back and I cant believe not stringers at all here is some pics
the boat
left side of the boat
front of gas tank
right side of boat
under the gas tank is a piece of plywood that goes from one side of the boat to the other just in the center of the boat
any opinions thanks...
the boat

left side of the boat

front of gas tank

right side of boat

under the gas tank is a piece of plywood that goes from one side of the boat to the other just in the center of the boat
any opinions thanks...