[detroitchild]

I agree with Joel and Chris on this one. Since you are new to the hobby and will be playing mostly solitaire or just against your brother, the advantages of the TTC may not be that obvious. In time as you learn the details and fine points of the the game (in particular the game with in a game like one on one match ups) you will find the TTC invaluable. You can use them on both the offensive line to create holes and on defense to disguise the types of formations to use, examples like blitzing, filling running lanes and using linebackers to do their many jobs.

Keep all of your TTC bases and practice your tweaking on them and as you learn the game a little better I guarantee that you will understand the advantages of using them.