No argument from me on need for safety. Personally, I would not take the risk of selling that device. Having said that, let's actually look at what the device claims:
The unit is shock protected.
It uses floating output, meaning that you would have to touch BOTH wires to get electrocuted. (OK, not so hard for some of us)
It does have water conductivity indicator (maybe just a light)
It has power adjustment and pulse duration adjustment, but the pulse frequency is set at 25 Hz (pulses/sec)
The 'View Instructions' link on the website takes you to more detailed description of the device. It also has 7 pages on 'Biological Applications of Voltage Impulses in Electrical Fishing' The document gives settings for targeting certain species of fish, but bass, crappie or tilapia are not included. White bream, stone perch, carp and catfish are. It acknowledges that pulse frequency is 'decisive for efficiency' because it takes different frequencies to get different species of fish, or even different sizes of the same species. (frequency not adjustable on this unit)
I sent them e-mail asking some clarifications.
I sure could use this device.
