I found it is best to do one floor section at a time. With a multi tool and half round blade I cut the top floor tabbing close to the wall. I try to remove the wood and leave the bottom tabbing in place as a guide and a lower attach point for the new floor. I usually trim up the edges of the lower tabbing to have a lip about 1" wide. Clean and paint
the frame while it is opened up. I make a pattern from lauan and pieces of cardboard using a hot glue gun for the curve in the back wall. Most of the floor has fairly straight sides the pattern is for the back or front wall curve. I cut the floor section out of 5/8" ext. plywood, dry fit the floor then remove it and coat the bottom and edges with resin and let dry.
I usually take the front or rear or both windows
out for dust control and air flow while working on a floor. Next get the glue off the wall for about 3-4" above the floor. I use a twisted wire brush on a 4.5 grinder.
You are now ready to install the floor.
To be continued. Any questions so far?