Roto-Mould Repair

I bought a P&H Capella last April and used it for four months until I was sidelined by an injury.It was keep inside,out of the sun the entire time. I went out the other day to clean it up and noticed that the yellow plastic has worn down to the white foam on the port side in an area about 12" long and there is signs of it wearing thin on the starboard side also. Basically the same area but on opposite sides. Does anyone know if this can be repaired and how? The dealer is about 1000 miles away so I can’t take it back to them. I have contacted the dealer, but thought that someone could give me some useful information on this before I call them again.