I use an ADCO cover. It is not a pain to put on or take off - I do it myself in 30 minutes or less. It does not scuff the TT. I store it in a new plastic garbage can purchased specifically for this purpose. I don't care what the dealers or manufacturers do. If you cover sharp edges, it wont tear. If you secure it properly, it wont blow in the wind (read the directions). It is made of a material that breathes, so mold and mildew won't be an issue. Lots of storage facilities are in industrial areas - mine was. I'm not sure why you would leave your TT uncovered in those dusty, wind blown places. Good luck.