Back in the days before digital video, I used shoot a lot of videos on tape. Here are my observations. Shooting videos seems like a great idea. Back when I was doing a lot of fly-in-trips to Canada, I shot videos of everybody on the trip, incorporated still shots and made keepsakes for everybody who made the trip. The videos told the story of our fishing trip. Those videos were a lot of fun to watch during the winter with my fishing buddies. The reality is that you'll find out after you've spent a lot of money on cameras and editing software, and hours editing, that unless the videos have some entertainment value, you never watch the videos you made.
Editing is very important. For your videos to be interesting, or entertaining, you need to tell a story or have a message of some kind. It's also a very boring part of making videos. Most of what you shoot is nothing you or anybody else ever want to watch. So you will have to watch it all and edit out the boring bits. That takes up a lot of time.
Go Pro cameras are great but they are designed for close up shots only. The videos made with chest or head mounts take good shots of your hands and the reel you are holding but are lousy for the long shots of the lure landing, fish jumping or anything else more than 5 feet away.
Get a tripod or a camera mount of some kind for the boat. If you want to use a GoPro, point the camera at yourself or someone else in the boat. Wearable mounts make pretty bad videos. How many fishing shows do you see on TV that were shot with wearable cameras? Wearables are best for fast action for guys who are skiing or riding a bicycle downhill at 70mph.