You can salvage the one you have got!

Take some fine grit sandpaper. I would start with 600 grit wet. And give the entire canopy a light sanding, increase to 1000, then 1500, and finally with 2000 grit. Use plenty of water and make sure and do the whole canopy. When you get through it should look terrible, like a light fog all over it but smooth. Next get some PPG 2021 automotive clear coat mix according to the instructions, but add 150% of the reducer. Here in Mississippi I use DT 885 but get what the local PPG distributor reccomends. After you spray it, it should look like new money.

Good Luck

David Reid