I suggest contacting
Zodiac for an authorized
repair facility in your area. These people will have the materials and
training to
repair the floor. Any
DIY attempt is likely to fail and also make a proper repair more difficult or impossible.
You probably have a different model
dinghy than me and probably live too far away but I have a Zodiac
dinghy with a fine floor and tubes but a rotted beyond repair transom. I'm not
buying any more Zodiacs.