I think a boat with proper bonding and good anodic protection doesn't need the "help". I would concentrate on fishing location, time of day, tide, depth, speed, presentation, etc., instead.
Agree ^^^^ however a slight positive voltage has been proven to be attractive to fish. I believe though that the above is most important as long as you don't run stainless cable on a hot boat as that will repel fish.With stainless cable, the black box can be adjusted down a bit to a lower voltage to stop repelling fish. Braid eliminates this issue. With Braid you won't repel fish because you have zero voltage .
[/QUOTE]A black box is not needed when using braid on your down rigger! .......BB. [/QUOTE]
True, a black box won't work at all on braid but if you want to use a slight positive voltage to attract fish then this device may work to do this for braid fisherman or when not using a downrigger at all. It could also just be a an attempt to market something that in practice doesn't work for various reasons.
What I can tell you though is that a slight positive voltage around your gear has been proven to attract fish - BUT also repel fish if that voltage is too high .
Braid has no voltage advantage (or disadvantage) so when using braid, it is purely your tackle visibility/ action /smell that attracts fish. With a slight positive .6V surrounding the lure you add another 'sense' advantage to attract the fish. How much of an advantage I can't say for sure as I haven't researched results but it seems to be enough that most if not all commercial trollers will tell you it helps.
Having zero voltage while using braid can however have its advantages -
- you have one less thing to be concerned about adjusting
- You are consistently fishing with the same voltage (zero) so you know catch rate hasn't changed due to a voltage change.
- You won't repel fish because you won't have too high a voltage
I wouldn't put an additional $25 on my line- too easy to loose $25.