UPDATE: (second and last today)New defense item added:
- Radar
http://bitfootball.net/images/def/radar.gifYou must place exactly 1 radar to your defense field, radar field must be empty, cannot contain defender or goalkeeper (also you cannot put goalkeeper line that collides tiwh radar)..
What radar does: If the attacker hits your radar position, he will got 0 damage points for this field, and you getting your defense skill + goalkeeping skill points to your score.
this way, also weaker players have more real chance to kick some big player ass..

more info: ask here, or read how-to in the game
enjoy
tomos

I think that after these improvements the game is balanced, now a small level player can win a high level one.