Been using similar shelters for 6 years now.
I have two 10X20's attached end to end to make a 10X40 that my boat is stored in.
I have another 10X20 with my snow mobiles & trailer and snow blower in it.
And I have a 10X10 with other items stored in it.
I knock the snow off the roof as soon as there is a couple of inches built up. Pretty simple just using a broom to knock the roof from the inside.
Currently working on laying patio stones inside the 10X40 to make it easier to work on my vehicles in there.
Notice I have sunk PT 6X6's in the ground to anchor the tent. It's lag screwed to the 6X6's and is solid as a rock.
Can't say the same for my neighbours, it ended up tangled in the barb wire on the top of his 8' fence during a wind storm a couple of months ago.