Lets think about stuff stowed on tanks - you don't want to stop the turret from turning or the gun from elevating / depressing so no stuff blocking it or the bow mg . Now the German heading into Russia during the early part of the war had all sorts of stuff covering the engine deck inhibiting the turret ( fuel cans , ammo , etc ) , but that was because they had no opposition and were outrunning their supply train , the Allies did the same pushing through Germany in 45 . If you are in contact , all that extra stuff gets dumped ! You don't cover the vision ports , you got to see whats going on around you , again , heading into Russian , lots of wooden boxes , crates on the fenders blocking the vision slits , but these are ( mostly ) gone when in combat . You also don't block your escape hatches , the crew has to get out in an emergency . A new tank you can get but a well trained crew to use that tank is priceless . And last , you don't cover the air intake / out lets on your engine deck , tanks run hot , engines have to cool , IRC the panzer IV sucked air in through the engine deck and expelled it through the side vents over the fenders , don't block them with a lot of kit . That being said , tankers carried a lot of extra gear , best to check wartime pictures for placement , and not pictures of knocked out vehicles as kit has been disturbed by the explosion , by the crew exiting in a hurry or by folks looking for souveniers or plunder . Rubicon has some nice pieces of kit planned ( the tarps I don't like , sorry ), I would just use them in more logical ( to me ) places .