He may have meant standing trees due to the age of

He may have meant standing trees due to the age of the lakes but log drives that were abandoned now that is a huge source of old growth trees that have sank way back a 100 or so years ago rivers and lakes all over wooded regions are definitely riddled with wood on the bottom just waiting for a Tygerlink to start easy pickin's and most are not very deep all though most are covered in silt that Side scan sonar would be needed to find them and some dredging needed to expose them nothing a tygerlink can't handle