Your canopy is plastic. It needs to be polished. Use the Noscratch as above (I use it on my Citation in between very powerful polishing) or go to your closest fbo and get a bottle of plexiglass polish (like noscratch), or go to your local plastics store and get the scratch remover/polish. Do it correctly, not cosmetically, clear coat does mess up a lot of canopies due to the different plastics used or the improper mixing of the clear coat. Plastic scratch remover and polish both have a grit in them which is equal to sand paper up in the 5000 or better range, it works and not much effort. Enjoy.