1 Blitzer 100,000gp
Pile up one side of the pitch. Put 3 men on the line, 2 on one end of the field, 1 or 2 in the backfield, and the rest on the 2nd side of the field. Break a hole in your opponent's wing and blitz through with as many people as you can, making sure to stay near but not ON the sideline. You can use your Witch Elves to catch the ball, but they are also well-used as blitzers, to knock holes in your opponent's wing. Pick up the ball and stay a safe distance from the line on the first turn. On the second turn, run up and pass it to a safe player (preferably a blitzer) i.e. one who will not be hit easily should you fail. Next, if your opponent has people in front of your block, blitz a hole and run through. If he doesn't, then the touchdown is yours.
Elven, Human, or Skaven Opponents
Put 3 men on the line, a blitzer and a witch elf (or a reasonable substitute, preferably one w/ Diving Tackle) on each wing, and your thrower in the backfield with at least 2 other players. Your opponent will almost certainly break through one side of your defenses, so make sure your defense is symmetrical (i.e. neither side is weaker than the other), because these teams are as good at piling one side as yours is.
If your opponent breaks through the line, and it is possible to get your witch elves
into a Blitz position, frenzy one of their catchers off the field (this is assuming your
opponent's QB has held back out of range for your witch elves to blitz; if he is within
range, do not hesitate to
Your opponent should not be able to find a hole in your defenses now. Unless he is very lucky, he will be unable to score this turn, and if this happens, your team should be easily able to recover the ball and launch it downfield to a blitzer or witch elf behind enemy lines.
Put 3 men on the front line, your witch elves and blitzers on the wings, and your other players safely back behind the line 2 or 3 squares.
Your first order of business is to blitz their runner or thrower with your witch elves. Secondly, try to avoid open confrontation (i.e. dodge away from his line). This will hinder your opponent's ability to advance "Da Crunch", "Da Cup", "Da Bloc", or whatever your league calls it.
Get as many people as you can behind the lines, but make sure you have at least 3 in front of the enemy, and enough on their flanks to prevent them from cutting to one side of the field.
Assuming your opponenet is not extremely lucky or skilled, you should be able to acquire the ball within a turn or two, and then you can outrun most strength teams straight to the end zone.
Other usefull skills: Leap, Strip Ball
Other useful skills: Sure feet, leap, sprint, frenzy.
I agree with the BBC suggestion here. As soon as you can, form an offensive and a defensive thrower.
Other useful skills: Dump-off, strong arm.
Other useful skills: Safe Throw, Sure Hands, Leap
You should have 3 basic types of linemen: Linemen (a.k.a. Black Orc fodder [though you should, with time, be able to teach those nasty Black Orcs a lesson they won't soon forget]), Dirty Players (a.k.a. 'dem Bastards), and Blockers (a.k.a. that Cheater!).
Other useful skills: Guard, Dauntless.
Other useful skills: Dodge, Dauntless, Frenzy.
Other useful skills: Dodge, Mighty Blow, Guard.
Even if you are a "nice guy" and don't foul very often, if you're playing against a wood elf or high elf team... for God's sake foul as much as you can! Its your purpose for being on the pitch for that game (aside from winning, of course)!