Johnoly
Contributor
- Messages
- 4,285
- Reaction score
- 6,018
- # of dives
- 2500 - 4999
Well to be fair......It's diving from a boat with a pilot house & doors live-aboard versus Cozumel/Florida/Privateers with wide open air steering helms. But a DM & Passengers on the back seats are an extra set of ears that say " Did you hear that?? " is nice to have also.Curious. Frank @Wookie , how effective are these whistles in your experience?