Continuity mistake: In the plane, after Superman says that planes are safe, the man next to Lois raises his arm way up high, but a frame later, from an angle behind, he is barely raising the tip of his hand.
Continuity mistake: When Lois and Clark exit the building and she scolds him for leaving, the passers by don't match between one shot and the other.
Continuity mistake: A tube and oxygen mask suddenly appear over the seat in front of Lois after Superman enters the plane.
Continuity mistake: Clark's dog leaves a baseball on the ground and walks until being parallel to Clark's both legs. A frame later the dog is two meters behind, next to Clark's left knee.
Answer: Superman doesn't fly through blasters on his feet. He simply levitates. In this instance, however, he also happens to be holding onto the object that he has his feet on (the boat), which means that as he moves up, the boat he has his feet on is moving up at the same rate.
Garlonuss ★