You've suggested that you don't need any instruments when you know the area?
Do you only use well marked channels?

Nope. I've only suggested that a sailor can cover and protect his instruments
when he's aware of the waters he's in.
If you want yours "out" so be it. It's your stuff and your money.

Donal, you appear to have entered the room with egg-on-face. Good job!

RB