I wouldn't let it get to me. The secretive mentality isn't too good for this sport. Most people just want to get out there and catch a few fish and have fun. If they are catching and releasing then it's no big deal. If you have the skills you'll still get them. When I'm out there I share what info I have and most fishermen will do the same. But there will always be that one person talking smack no matter what you do.