RE: under water cameras
I've had one for about 8 years. I rarely use it. I have primarily used it to scout for structure on new lakes or on new areas of familiar lakes. I've found that when I use it, I sit way too long over negative fish because I can see them and it becomes a quest to catch them. Instead I should be beating feet to find active fish. Also, since it takes longer to drill a camera hole, unwind the cable, and get it positioned towards the bait, I'm less likely to move because of the hassle of repacking/unpacking the camera.
In addition, several of the lakes I fish are too murky to use the camera effectively. Pymy, Edinboro, and Wilhelm are a no go. Chautauqua, Eaton, Justus, and Kinzua are usually ok. Nighttime use is also useless...I know, I know...all the manuafacturers claim that their IR lights allow you to see clearly in low light conditions, and that's true, from about 4 inches away.
One use that I found it handy for was when I was taking my son when he was younger, it would keep him occupied and interested for awhile.
I'm not trying to bash U/W cameras...it's just that I don't find them very useful for my style of icefishing, and it's just additional weight to drag. If you don't already have a flasher, that would be a much wiser investment IMO.