I have read many posts stating a waterproof cover must be properly
ventilated. How ever none say how. I have a 22ft Chaparral cuddy and a
huge cover made of vinyl thick enough to patch a Zodiac. The label on
the cover says to properly ventilate but again doesn't say how.

So, how are some ways to properly ventilate a waterproof cover?

Any advice is appreciated,

Todd