I definitely agree that other methods would work. If the wife realizes what she's getting into, things can flourish.
Three hours worked back in the day because all players had sixth period study hall that was mandatory. This is when they received tutoring and time for homework. But as you pointed out earlier, our admin bought into the whole picture and created that study hall period as an elective credit. I felt like we managed our time wisely as special teams was an hour a day which most programs don't even do special teams each day. It worked for us and to have four championships I believe it was worth it. If a coach can get... indy period, offense, defense, special teams, and film break down done in two hours each day and win in the end, that's all that matters. Like I said back in the day things were different so we took advantage of it.