I just looked at my receipt and double checked online. I have the longer cover. There is a little play at the ends but the straps hold it tight. Here is a link to mine.
Designer Series SFS Aqua Shed Travel Trailer RV Cover - 22'1" - 24' - See more at: http://www.campingworld.com/shopping....ggH1WBP4.dpuf
It retails for 277.99' I got it on sale for 193.99. The spare tire cover keeps falling off so I use the extra length to cover it.
I tried to upload a photo of the cover on the trailer but it keeps timing out. When I figure it out I'll post a photo for you.