MJ,
If I could fly those hours a year, I might - well actually, might not - be happy with such wafer thin margins.
As it is, my contingency allowance alone is a tenner an hour!
(And our three aircraft average about 500 hours a year each - but have been known to do 7 hours a day, but not for a fortnight in Scotland!)
Perhaps the problem is that with one hour in the air in a two hour slot, we end up with a 14 hour day at seven hours! Too many of those and you just want a dark room to huddle in!