A:AnswerThe GoPro itself will not go below a feet but enclosed in the Supersuit it will go down to 103 feet (depth I just took it to the other week). If you're not attaching a light, recommend a red or magenta filter to add color back to the videos / photos.
A:AnswerYes to charging but no to hard-wire; as long as you have USB charging on your bike, you can use the camera while charging. I have a USB attachment that is hard wired to my battery. The waterproof cap disables power when the ports are covered so your battery doesn’t drain.
Another option is to mod your helmet, if it’s attached there, to include a cheap USB battery for longer trips. I have a friend who did that but with light strips and it works great. Just find something that’ll work for you.
A:AnswerOr just hardwire the GoPro to your bike, no need to worry about battery charge and switching batteries, only have to keep eye on storage.
More info here
https://www.lifewire.com/car-tech-key-concepts-534885
Hope this helps
A:Answerget him the hero 5, that should be more than enough if the camera that you are looking to buy is an action cam. but if he lifts indoor where theres not many lights or not bright enough, the image quality will suffer.