My DS did TKD and he was able to place it under his ECs.
Caveat: He competed on a state and national level. TKD was not just pay a check for him to participate. Due to the fact that he was competing, he also was required to be an instructor--- not paid. He than could also place that under his ECs as volunteer hours.
~ Thus he had two areas showing sports just for TKD as an EC/awards.
He also had a PT job for two years as a lifeguard when he applied.
~ He placed his 23 saves in his packet and his certifications regarding CPR and life saving.
~~ Again, he showed the board that he was athletic.
Hitting the PFA out of the ballpark also will show that you are athletic.
Now for why they look at sports. It is not only about athletic ability, it is about time management, leadership and long term commitment.
I know I am a skipping record, but what is your major? What is your cgpa? SAT/ACT? Do you understand that the scholarship is only guaranteed for your first two years? If not selected for summer training(SFT/EA) as a sophomore, chances are they will disenroll you, and the scholarship is gone. Can you afford to stay for the last 2 years without a scholarship.
Good luck. Thank you for wanting to defend this great nation.