Garmin GMI 20 functions

Apr 5, 2009
3,131
Catalina '88 C30 tr/bs Oak Harbor, WA
I am thinking about adding a Garmin GMI 20 display to replace an old analog depth that I no longer need.
I have a Garmin EcoMap plotter with depth. I also have Garmin G-wind and I know that it will display the normal wind info but what else will it do?
I am hoping to use it for an assist to my plotter because I helm from the low-side combing which makes it hard to see the plotter while steering.