RE: Underwater Eyes in R/C Sub
I have a $20 Wal-Mart sub, a simple "dynamic diver" (no ballast tanks), so I'm not too concerned with losing money.
You can see an RC sub easy in a clear pool. But in a pond where you can't see it down more than a foot, I still think it's cool to cruise it just like you would your RC surface boat, then send it under for a moment. I think it's kind of fun to just come up until the periscope cuts the surface, then duck back under. Not seeing the sub isn't a problem because if my sub goes out of range and loses signal, the motor stops and it's weighted to come back to the surface where I can see it and walk closer.