Why is it important to think before imitating TV researchers?
Sasquatch do this for one purpose - to warn that we are in the woods. A Sasquatch, while running away from us, will pick up rocks and clack them. Sometimes, if you listen, one of their own will howl back.
If you go into the woods and clack rocks thinking you're talking to Sasquatch, you're actually just warning them to hide, your kind have arrived.