So I have a 859 on my bow plugged into my minn kota trolling motor. I have been wanting to buy a helix 9 mega this spring mostly because the 9 could network and have mega which the 7 couldn't. Well now with the new helix 7 si G3n it appears that is has mega and can be networked. I know alot of people will tell me to get the bigger screened 8" 9" or 10" but money for Me is an issue. I thought if I could run Mega full screen on the console, I also have a Lowrance elite 5 at the console i could run in 2 D or the navionics chip. I was told that I would be able to also view the side image on my 859 even though it doesn't have si if it were networked with a unit that has si. So my question for People that have networked units how does it work? Could i only see si on the front unit if the si page is active at the back? Or could I see si at the bow while still seeing down image at the back or 2D? From what i have seen online the ethernet hub and cable will run Me around $300 so I'm just trying to get a feel for if its going to be worth if for me to connect the 2 units. I should be able to see waypoints from the back unit to the front but do they physically move onto the front unit or only visible if have the back unit on? I really didn't want to drop a grand on one but it looks like the 7G3N will be $800 and the 8 G3n will be $900 and has 2 sd slots so I could map chip and autochart without having to swap chips every time which I would have to do with the 7. I thought that would be a big deal for Me but now not sure how much I would autochart. Looking to buy maybe at the Scheels spot at sport show they tend to knock off $100 to $200 at the show. Also if its still cheaper online would scheels price match at the sport show booth? I know alot of questions but appreciate any input.