Originally Posted by bobblangley
I need to do something to keep precipitation off of my trailer ...
Precipitation should not be an problem unless its severe acid rain. Precipitation is a problem when it gets inside the camper (i.e. leaks). If the precipitation is snow or ice then a cover will make it more difficult to remove the snow or ice, which is sometimes needed to make sure the roof is not compromised. So I would not worry about a cover just because of precipitation.
The major benefit of a cover is reducing the UV (sunlight) damage to the finish and especially various rubber components (thats why some people cover the tires
even if they do nothing else). So I would consider using a cover in the sunny summer in the south long before I would spend money on a cover in winter - in snow country. It can also be of help if you are forced to store the camper under a pine tree.
And the prior comments are valid and why you should buy a good cover, even if its not Calmark. Loose fitting covers or non-breathable covers can do more harm than good.
And in all cases a carport or enclosed shelter would be better, but of course is often not possible.