Not cheap at ?375 special offer, add a bait boat for accurate placement puts you up around 1000 quid. Now I can see all the anglers nationally rushing out to buy this product. Particularly the Tackle Tarts LoL!
On a more serious note, I can see some benefits of using one. Such as dispelling some of the myths around angling - Twitch bites and what is actually happening, how many fish are in your swim feeding at any one time. The possibilities for supplying information are relatively limitless. Who knows such information could lead to a radical rethink of the way we fish.
The devise would however have some limitations, deep waters below 5 metres where light penetrations is poor and the only pictures you?d get would be a few inches in front of the camera. Likewise, turbid water the images would be poor. Deep silty waters and you may not get any pictures at all due to sinking into the silt.
I guess the devise is only an observational tool at the end of the day, and the skill if there is any, would be interpreting those observations to put more fish on the bank.