I think it's safe to say now----for a vlf detector the Racer is at or near the top of the pack when it comes to stability on wet salt beaches.
With this said there are better detectors for the environment you mention.
But IMO if you don't want to tie up $$$$ in a dedicated beach machine and also hunt on land for coins/jewelry/relics, the Racer may be exactly what you are looking for.
Good luck whatever you decide.