Here's some free advice for you Prof.
When playing Tegal and Thunderthighs, play your strongest possible line up every time. Ignore cards, ignore injuries. Just really work the system hard.
However when playing other teams in the Premiership, rest your strongest line up and give the youngsters a run. It will gain them experience and protect your stars from injuries and cards which might prevent them being available in the BIG matches against Tegal and Thunderthighs.