Get ready for wild positions with junior players

This position is from the Vancouver Rapid Chess League round 3. White is a junior player and when you play against these youngsters you can expect some wild positions. Black is fine here but he's taking too long. He needs to bang out a few moves to take advantage of the 5 second increment.

1. Nh3 Rh2 ( I prefer h4) 2. Bxg3 Rxh3 3. Bf2 Ra3 4. Rh1 Ra1+ 5. Be1 and Black's flag fell 1-0