Think of padel as pickleball's cool older sister. The rackets are thick and dense, making a satisfying "thwack" every time the yellow tennis ball hits against the perforated surface. Players move across a much larger court in pairs, without having to worry about the no-volley zones you see in pickleball. But perhaps most notably, padel courts are completely encased by tall, glass walls — and players are encouraged to use them to their advantage.…