I have a BOSS head unit only that came new in my 2012 Alumacraft. It is FREE, come and get it. Since its free, please don't call me complaining how you don't like it or that you couldn't make it work, etc. :)
Here is why I took it out of my boat.
1. It doesn't have "buttons" for the presets...it senses your touch and I hated it. Sometimes i had to massage it to get it to do what I wanted.
2. I didn't think the antenna reception was great. I put a Kenwood in last night and the reception is great.
1. It has an iPod/iPhone plug in behind the face, and your iphone goes inside the radio for safe storage. It has no CD player.
2. It has USB and SD card slots for music.
I got rid of it because I hated it. Fair warning.