Derek Randles is a pillar of the Bigfoot community. He has been researching the Sasquatch phenomenon for the last two decades. Few people have covered as much ground searching for the great beast as Derek has. Ever since his sighting many years ago, he has been on a quest for answers.
Derek is the founder of The Olympic Project and often takes people out on Bigfoot expeditions. There are few people in the field who I respect more. Anyhow, here is a great video of Derek and the Olympic Project teaching a class on casting tracks.
"When in doubt, cast it!"