I made this moulding to cover the edges of the ply and frame the new deck. At 18 x 20 mm it was small enough to simply bend and screw in to place without steaming.
Cardboard templates were used to cut out the shape of the wheel house and maximise the amount of decking I could get out of each plank.
Rather than steaming the outer edge plank to achieve the required curve I laid 72mm wide strips close to the edge, marked out where to cut with this home made jig and cut and sanded them to a neat fit.
The same process was then repeated to cut the inner most edges to form a continuous 44 mm plank around the newly fitted edges and a 50 mm plank round the wheelhouse.