Don't worry, I'm not trying to emulate Matthew McConaughey in "Reign of Fire."

The main reason to get Frenzy is to push opponents off the pitch and gain a man advantage. Good coaches just don't leave players near the sideline often enough for my taste. Tackle is very early on my skill progression, so I can deal with the agility teams.
Dauntless is my first priority on doubles because it helps even the odds against Strength teams, where humans need help the most. The offence starts with a blitzer knocking down their big guy with an assist and following up to tie him down. Ideally, your Ogre can then run into multiple tackle zones and tie opponents up. Strength teams don't generally dodge too well, so if you've done your job right you've essentially gained a man advantage for a turn or two. Your opponent can probably take care of the Ogre by moving a person or two over and blocking him off. This will be a victory for you, since you can go downfield more easily. His big guy will probably will not be blitzing your dauntless off of you either, since he will want the blitz downfield.
My (patented)

theory of Human play says that you should play to a team's weaknesses when using Humans. This means that you should be going for the quick two or three turn score, and the man advantage should be big. Since you ideally have a cage moving down the sideline, their blitz is somewhere else by then, and you're in a good situation. Finish up the quick score, or stall if needed.
[url=http://www.bloodbowl.net/naf.php?page=tournamentinfo&uname=skummy]Skummy's Tourney History[/url]