I dont keep a season in mind because there isnt one in our man made environment.
I pair up when I am feeling ready to have clutches and only 5 or 6 days out of a month for maybe 3 or 4 months.
A while back I had my incubator running for just over a year with spread out clutches.
Had most sold before they were up to my 100g weight minimum. Its nice to know all I have to do is care for them without worrying about marketing them. Doesnt happen every time but I try to have buyers ready.