Alpine MC20 Not So Waterproof

Anyone else have the Alpine MC20 remote and have you ever had water get inside of it?

I have mine installed on the near the swim platform on my '07 Sanger V230. So at times it can be completely under water. It is still within the 1-year factory warranty. The Alpine Web site states it is "fully waterproof" and to "mount it anywhere." Conveniently, Alpine does not easily honor their "fully waterproof" claim and I have had to file a complaint and am currently awaiting contact from someone.

I previously had a Sony RM-X60M/R installed in the same location and never had a problem in 4 years. Hoping this is just a rare defective unit. But still very disappointed Alpine did not immediately stand behind their product.