The only cover, short of going with a custom cover, that we found that would fit our Bungalow was the
Camco Ultraguard Cover for a Class A motorhome. Due to the tall nature of the Bungalow, the Class A cover fit very well. The Ultraguard Cover was very nice, heavy duty with large vents along both long sides of the trailer roof line.
The downside of the cover is the straps that go from the roof to the bottom of the chassis. In the wind, these will flap around. We left our Bungalow at our seasonal site (800 miles away) covered the first year we bought it. When we visited it 4 months later around Christmas we noticed that some of the straps at the roof were fraying the cover near the roof and one of the straps had completely failed (not sure that was because of the wind though). The awning side of our TT faces due west and our TT is directly across from a farm. During the summer the winds blow most of the time right down the farm straight onto the TT. The couple times we were there in early fall, we noticed the winds were mostly coming out of the south, so we thought maybe the cover would be okay.
We were confident that the cover would be okay for the remaining months until the start of the season. It most likely would have been okay, until a storm dropped a tree branch right onto one of the roof vents. It punched a hole through the cover and the vent cover. The storm lasted for two days and after the storm passed, the cover had completely failed.
We decided not to cover it again because of the wind and not being able to find a cover like the ADCO that has straps under the chassis instead of from the roof to the chassis. If we did do it again and got the same cover, I would cut the straps off and figure out a way to have straps run under the TT. If it hadn't been for the wind, I think the cover would have lasted a long time.
-Michael