I leveled the the boat and blocked the trailer frame to prevent movement. I then shot a laser line across the sides and measured down to where the upper hull sides attach to the floor. You can see the horizontal lines and measurements in the pics. That gives me a reference to the exact floor height.
I continued to remove the floor and found they used 1x4 pine blocks stacked up and used the foam to hold them in. This is the only structure under the floor next to the sides . They were not treated with anything and they are starting to rot. If anyone has any detailed pics of the stringers on a comp especially at the sides please post or email them to me it would help a lot to know how its supposed to be,