I'm in 100% agreement with Jon. Calmark if you're set on a cover which I would do if I hadnt installed a "carport".
I used one of the cheaper covers that didnt have a door or anything. Going into the 2nd year of ownership, I declared that I would install a carport by fall
or sell the Scamp
. That's how strong I feel about covering it as it's used 2 or 3 at the most times a year and how strong I am against using the covers.
Again, the Calmark's are the nicest/best in my opinion for a cloth-style covering, but one was going to cost nearly 40% of what you can pay for a decent "carport". Sometimes "codes" prevent people from being able to install them.