I have a HB 798si and i have it mounted on the console. I need a depth finder up front to fish brush piles. I had a HB wide 3D vision up front that has stopped working. Here is the question:

Can I use the old vision mount and transducer with my new 798si?

Also can I split the GPS so that I can mark waypoints as well?

Basically I want to use all of the features of the 798SI except the SI up front. Any recommendations and help would be appreciated.