Hello Pojo fans, I'm here to tell you in my opinioin the best way to defeat haymaker. Have resistant pokemon. The most commonly used haymaker pokemon are
 
Hitmonchan
Electabuzz
Fossil Magmar
Lapras
Scyther
Jynx
 
and some others.
 
You have to have pokemon that can defeat a specific pokemon. For example A hitmonchan if left worthless aganist fossil gastly because of gastly's resistance and Hitmonchan weakness.  Electabuzz will lose to sandshrews and diglett familys for the same reason. And colorless block psychic. For the last 3 tournaments I've been in. I have faced 8 haymaker decks. I won 7 of them with my anti-haymaker deck.  And for the rest of the haymakers. Sctyher, Magmar and Lapras use porygon. This is my anti-haymaker deck
 
4 Fossil Gastly
3 Fossil Haunter
2 Gengar
4 Diglett
2 Dugtrio
3 Porygon
2 Ditto
 
10 Psychic energy
12 Fighting energy
 
4 Bill
2 Oak
2 Computer Search
2 Super potion
2 Switch
2 Gust
2 Pluspower
2 Lass
 
Try this deck out, it really works. When you play it make sure you Gastly vs Hitmonchan and Diglett vs electabuzz and porygon using conversion 2 on anyone else. Dittos in my opinion are a better pokemon than sctyher. Personally I hate sctyher he is slow and weak unless in a grass deck.
 
you can e-mail me at
striker171@prodigy.net