Thanks guys. The Garmin radar and rest of the setup is great. I'm running a 4208 with a GSD22, GMR18HD dome and a G2 chip. The chip is more of toy than anything, but what the heck.
I ran to the fingers a few weeks ago in total fog in the dark. It was real flat and I started getting a hit straight ahead about a mile out. I slowed down and turns out it was marking a bird sitting on the surface. I was pretty impressed. It also can spot the crab pots and clam stakes in Great Bay.