It is never the hooper, it is the hoop. Anyone can hoop. It is just a matter of finding the right size. If the diameter of the hoop meets or exceeds the distance between the floor and your belly button, you're set. The more moves you master in both directions, the smaller the hoop you will need. Pace yourself. A 30 minute hoop session a day doesn't just happen. Let this be really easy.
Grip is also an important factor. The more cloth tape on a hoop, the more grip or traction it will have on your body and hands. Safer as less bounce leads to less bruising and grip in your hands will keep the hoop from flying and breaking things.