I am planning a bear hunt to SE Alaska. I have talked to several people who have hunted there. Many have made emphatic mention of the need to anchor the bear or risk losing it in the rain forest. One even said he thought an infrared gamefinder would come in handy. He had not used one before. I would like to hear from some of you who have used these. How effective are they for finding a dead or wounded animal in blowdowns and thick brush? Any recommendations on which one to buy? Any precautions or tips on use. Thanks, Brian.