How can I get more than 50 PokeCoins in a day?

How can I get more than 50 PokeCoins in a day? As of writing the only way to earn PokeCoins in the mobile game is by defeating other trainer’s Pokemon at gyms and defending it. For every hour you defend a gym, you can earn 6 PokeCoins. The maximum you can earn in a day is 50, however, so anytime beyond 8 hours and 20 minutes won’t benefit your PokeCoin balance.

As of writing the only way to earn PokeCoins in the mobile game is by defeating other trainer’s Pokemon at gyms and defending it. For every hour you defend a gym, you can earn 6 PokeCoins. The maximum you can earn in a day is 50, however, so anytime beyond 8 hours and 20 minutes won’t benefit your PokeCoin balance.