Is there a technique to banging on a tank?

[ImpotentSeaSnake]

Just get a magnetic shaker like the one in this video here.

Could the magnetic caps cause the compass of your wrist dive computer to be inaccurate though?

 

[poko21]

reviving an old thread but are the magnet shakers any louder than smacking your tank with a carabiner?

 

[RobPNW]

I don’t know but I carry a large boltsnap and I slam the crap out of the side of the tank like a dang jockey whipping a thoroughbred in the Kentucky Derby and nobody looks.

 

[poko21]

I don’t know but I carry a large boltsnap and I slam the crap out of the side of the tank like a dang jockey whipping a thoroughbred in the Kentucky Derby and nobody looks.