Hi,

I used the clear sheet to protect the whole knee area of the tank and it works a treat. Yellows a bit over life but there is enough on the sheet to cover it again.
One strange thing was that after making a paper patern for one side it would not fit the other. Different shape! So make a pattern for each side not just a mirror copy.
Also made a cover to go around the key area. Trickier.

Rob