For regular players, fancy tech like ground listeners or Blood Eagles isn't needed for anti-sub efforts. Just direct your troops to do a sweep line search. Like when that Korean player was searching for Da Fei during the competition.
Da Fei's got an air force. With the best speed and search range, plus a large number of units, sweeping searches are a breeze. Even if the enemy could climb trees, they'd have a hard time hiding from Da Fei's air force. But using such a basic brute-force method wouldn't show off his skills. It might even make people think, "Eh, Da Fei's not all that." It wouldn't have that show-off effect.
If you're not showing off, how's life any different from being a salted fish? If the conditions allow, show off. If not, make the conditions to show off! Play so well that your opponent has to admire you.
