I agree with the other two replies.
There are two types of herpers who pin snakes - those that have been bitten (and didn't learn) and those that are going to be.
I used to pin venomous snakes until I was bitten on the index finger while I had one in a "textbook" pin. I had pinned hundreds of snakes prior to that without a problem. Since that date (June 9, 1986), I have dealt with many more venomous snakes without having to pin more than a handful. Again, before you pin a snake you should ask yourself - "Is what I am doing worth losing a finger and many thousands of dollars in medical expenses?"
When I watch other herpers, I generally notice two things. Those individuals that I regard as skilled herpers never pin snakes. They are able to handle a venomous snake without ever laying their hands on it. When I see someone pin a snake, I know the person is a rookie. Frankly, I think the same thing when I see someone use tongs on a north american Viperid as well.
Steve Irwin is irresponsible and extremely egocentric (his shows are about him, not the animals). But he is a very skilled snake handler. Unfortunately, in order to fuel his own ego, he handles snakes irresponsibly on television.
Jeff Corwin is a very knowledgeable (unlike Irwin) host who makes an effort to impart correct information about the critters/areas he is discussing (again unlike Irwin). But when it comes to dealing with venomous snakes, he is a boob. The fact that he pins venomous snakes when he obviously doesn't have any confidence in his ability to do it safely means he is headed to a bite.
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Chris Harrison