I know this has nothing to do with OSI, but I thought I would hypothesize. On Lexia, they have +10 fishing poles, and these give a definite bump to the chances of fishing up serpents (and therefore MIBs). So I'd like to see if this is the case on OSI. However, since I don't really play OSI anymore....
My serpent extraction went from about 13/hr to nearly 18/hr going from 100.0 to 110.0.