Zodiac ribo 420 screw question
Hello boys and girls,
I have a zodiac ribo 420 whichis the solas version with an orange hull and red tubes.
There are a number of stainless steel screws in cups, they are about 25 - 30mm long, they are in the holes as shown in the photos.
My question is what function do they perform as they screw through the fibreglass hull but there is a void underneath and I am struggling to ascertain their purpose.