I would like to run a hummingbird side imaging unit on the console and a lowrance unit on the front of my boat as i prefer the lowrance for vertical jigging and drop shotting, etc. I also would like to be able to hook these two units up together to share way points etc with either the hummingbird or lowrancenet units. Have heard there are adapter cables for the lowrancenet and like this system as it seems to be easier to install but any help and shared experiences with both systems is appreciated. Thanks guys this is my first post

I don't think it will work.  They use difference format for their  data.  It is a lot more that difference cable ends.

you can hook 2 lowrance's up, or 2 Humminbird's up, but not together.

you can run them at the same time, but they can not share info.

Depending on the units they should both be NMEA 0183 compatible which means you can use a single gps antenna to provide position to both units.  But, it provides position only.  There will be no sharing of waypoints or any other data through this connection.