Quote Originally Posted by mildot1 View Post
The Technological Angler Volume 2 | Integrated Technology

If your a past middle age dumbbo like me that just purchased a set of SI/DI units is this DVD set worth buying?

Thanks
Mildot
If you want to buy a disk ....and ~
If you own a "core" or Helix unit:

Sonar and Lowrance Education, DVDs and More | Doctor Sonar

Ever heard of Doc Bruce??
"Doctor Sonar" did a pretty good job on this DVD:

Humminbird Core Models Training DVD | Doctor Sonar

He runs an ONIX also, and knows his way around one of them too - not sure if he's working on any DVD for them or the Helix ...