Boa breeding-to cool or not too cool

[richardhind]

Hi
I've been doing a lot of reading on boa breeding I know about ages and weight etc but seem confused on breeders opinions .some breeders start cooling them down in October before introducing the male in November/December
Some breeders say it's a must but then other breeders say they get the same results from not cooling ?
Any ideas what's the best results are