Don't want to seem critical, but who in the heck is Dr Sears? Does he have any published papers that we may look at having to do with this subject. Do you have a link or are you just making this stuff up because it sounds good? I've read many reports that there is much bigger issue than just hexane and there is becoming a BIG problem with multiple contaminants with fish oil and it is a growing problem and many supplement companies are not addressing or even admitting to some problems.
"used in our fish oils" sounds more like a salesman statement. Maybe you could get where his studies are coming from, what data, how old, and paid by who. I'm interested. But I don't think one should pick out just one chemical but look at everything involved. Give up one a small amount of one chemical may get one a large amount of others.
Many different views on the subject for sure. Even between people that have a Dr. printed in front of their name. Searching around the internet one will find all different views depending on what is being sold.
There are also many ways being studied and experimented with that are reducing or not using chemical extraction with things like hexane, benzene, or ether. For example many studies and research are in the osmotic, ultrisonication, or other sonochemistry areas and I'm not sure where BEHL is particularly looking into right now.
It will be interesting for sure to see where this goes, but I wouldn't throw out the algae Omega quite yet and definitely the overall market selling of algae Omega is not and Omega from algae oil is and will be a growing expanding market for some time to come. Fish are becoming over fished, diminished, less palatable, more polluted, more expensive to farm while algae is becoming cheaper, easier, better, and more available. Whats a market to do?