As everyone has said, don't get too frustrated by not winning right away. Very few new coaches come in and win right away unless they have "cherry picked" an already good team. Recruiting is king here, and talent will trump most game planning until you get to an even or better matchup.. There are many coaches who do run a single offense with great success, you just have to know how to recruit for that respective offense. Most do use 2 on offense and defense on the average though. My advice would be to check out other coaches that run your offense and defense and try to emulate what they are doing, what types of players, and how many at each position. Don't be afraid to ask questions in here or by sitemail to vet coaches. Most are helpful, and especially dublinuf as he is one of the elites in the game!!