The people who make the different styles of hubs & shelters usually recommend using the spray 'Plastikdip', do it in light coats so it will twist and bend, heavy coats tend to not
be so pliable and forgiving; don't use the flex-seal from the T.V. ads, it will get as hard as a rock when it dries; and yes, pay attention to fumes, a good 'air out' will be needed
after use
Good Luck