superpilot,
I'm not really sure what your point is regarding seasonality at TOM. All airlines have this issue To a certain extent, however, it has been managed down considerably at TOM over the past few years, in fact the 75/6 is manic year round, the 78 is actually reverse seasonal as most long haul is through the Winter..... only the 73 has the issues you allude to but with 9 aircraft going to Canada every Winter, the days of 3 flights this month are pretty much gone.
One only needs to look at the apron in Man on a Winters night, there can be 10s of aeroplanes mostly jet 2 and TCX... there are very few TOM jets sitting around idly.