I only have 2 Stepps at the moment, I use them as a platform and climb via other means. I may buy a complete set after this season because I'm getting really good at setting them up. They don't take all that much more time to set up, but that is the topic for other posts.
I bought two of the 'singles' to test the waters and see if I like them for a platform. In short, they came with whatever length rope comes with the singles and it has been more then adequate for the trees I hunt. To carry them, I have the 'standard' loop affixed to the back of my saddle that many other folks use to transport Stepps for their platform. It works VERY well and is plenty quiet without augmenting them with stealth strips or the like. I am just careful to NOT unintentionally bang them on anything when setting them up. FWIW emplacing them right-to-left is the key for me when putting multiple Stepps at the same height.
For the way I use them, 2 is perfect and 3 Stepps may get in the way. (Sorry Andrew!)
The reason for this is how I spread them on the tree, my boot sits (stands) across the longer axis of each Stepp. If I put one directly in front of me (in lieu of an XOP platform) I would be standing on the shorter axis of the Stepp. I think that would be similar to hunting while in the 'up' position of a calf raise exercise because only the balls of my feet would contact the Stepp (I have a size 13 boot). Perhaps this is not the case, but so far I haven't really needed to alter the manner in which I use them. They are VERY secured to the tree when I put them on therefore I am NOT concerned in the least with cross-loading as if leaning for a shot.
If I remember, I'll snap a picture of the back of my saddle to show you how I 'pack' these two Stepps. It works well for me, I can easily untie the securing cord and pull each Stepp individually to set them up, all without making noise. YMMV.
In case you can't tell, I am a huge fan of these Stepps and like others I anxiously await his dadgum Stepp Platform unveiling. If you see Andrew, tell him to hurry up!