Straps are visible 360 degrees from a good distance by humans and game. A band around a tree is not a common pattern on a tree, so it catches the eye. By using a mount, you can place your cams higher in the tree looking down. This keeps it out of the games face and they eye of a thief. When they are higher up, they are not only harder to see, but harder for a person to get. I currently run 4 cams and have these mounts on every cam. The hardware is cheap, maybe $3 to build 1 mount. Which is a great investment considering how much most game camera cost. Were talking about 3 thumb screws and 3 washers and 2 wing nuts. Deer are better at picking things out than most give them credit for. I have watched many deer from stand avoid camera traps and if not for seeing it in person, would never know the deer existed because he was too smart to walk into the camera trap. Any advantage I can have, I take. Black flash cams and camera mounts are the way to go
You can alsos crew this into any sized tree, limb, fence post, plot spikes, corner of houses/buildings etc. The possibilities are endless. You can buy 1 for $10-20+, or build one for $3-5