Here is an example of a single passenger para-glider, flight starts at 7:34, So Hamas flew 750 of these in two seaters across the Israeli border with the back passenger holding a rifle and the IDF did not notice for hours. Does this sound right?
Remember, a Palestinian can't cross the border on foot without going through an IDF checkpoint yet 750 of these just floated over the border with the back passenger carrying an x95 bullpop Israeli rifles. They only go about 20 mph and fly only about a hundred feet or so.