Having been in the aviation community for some time and having seen more than a few accidents with these things, it's worth to mention that they are way more dangerous than they appear. The thing to look out for is "collapsing" the wing, which is likely fatal at the kind of low altitudes normally flown. That "wing" always needs a positive loading. Downdrafts at the perimeter of a thermal, orthographic winds, rotors, fronts, convergence lines, other causes of turbulence and vertical drafts - there is a reason why you often see paramotors in the calm of the evening, when you can cut the air like butter. If you like flying, a more safe hobby would be gliding.