Quote from coolweb:
murray,
Explain what you mean by overnight insurance premium,
you keep mentioning it 
I can't seem to understand what you mean
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Coolweb;
Will illustrate with one of your seasonal quotes ''peach farming'' & insurance premium .
Have 4 peach trees, 3 trees one year old,too young to fruit,
1 older tree =10 years planted .
10 year old tree has probably only has peaches 40-50% of summer time.Good investment, but OVERNIGHT frosts killed 60-50% of return on investment .
Coolweb that 10 year tree has still been a good , tasty, helpful seasonal investment, even with 40% sucess or so hit rate.
Actually borrowed ''insurance premium for overnight holds'' as a paraphrase from Rich Dennis derivative /Jack Schwager book.
Except use it for stocks, [not futures], like long oil/gas stocks am in now ,
could gap down next week , probably more likely to gap up.
Any insurance co collects premiums monthly, even thoiugh they pay out claims like some unfavorable gaps/ loss claims.
They gapped GM against me when holding short overnight ,
was short it, they gapped it up against me ,;
but gaps usually folow certain patterns, like insurance co reduced my rate for good driving record lately
