More options here

1. Fly Fishing: Accessories could include rod and reel combos, waders, lures, and flies. Articles could include tips and techniques for fly fishing, how to choose the right gear and fly tying tutorials. Product reviews could include reviews of the latest rods and reels, waders, and lures.

2. Freshwater Fishing: Accessories could include rods, reels, lures, and tackle boxes. Articles could include tips and techniques for freshwater fishing, fishing in different seasons, and bait selection. Product reviews could include reviews of the latest rods, reels, lures, and tackle boxes.

3. Saltwater Fishing: Accessories could include rods, reels, lures, and tackle boxes. Articles could include tips and techniques for saltwater fishing, tackle selection, and live bait fishing. Product reviews could include reviews of the latest rods, reels, lures, and tackle boxes.

4. Ice Fishing: Accessories could include sleds, drills, jigs, and tip-ups. Articles could include tips and techniques for ice fishing, the best gear to use, and ice safety. Product reviews could consist of reviews of the latest sleds, drills, jigs, and tip-ups.

You may research via the Niche Finder found on your WA dashboard.

https://my.wealthyaffiliate.com/home#nichefinder

You have ten runs, renewable monthly.

Check out Kyle's Vlog The Brand New "Niche Finder" Platform Has Launched! Some options include

Fly Fishing
Ice Fishing
Saltwater Fishing
Surf Fishing
Bass Fishing
Kayak Fishing
Deep Sea Fishing
Trout Fishing
Pier Fishing
Striped Bass Fishing

Do any of the above interests you?

Your audience could be beginners, or you may have another group in mind.

Initially, you would want to discuss an aspect of a focused niche with a qualified group of people who would be your target audience. You walk them through your journey, give your visitors sound advice and promote products however feasible.

Also for Amazon there's a statement about qualified purchases that has to be placed in there like after the first link or so, read through their policies and don't forget to do that if you use Amazon links. Good luck!!

There's an old children's fish story called Big Al. It's got some great educational and spiritual messages. Write a book review of it, and likely this will attract traffic to your site. We could all use a lil traffic.

Also sign up with Amazon and write a page about the best, critical clothing items to wear for fishing and attach links(especially for fly fishing clothes). Then people can get the clothing equipment for fishing fast and try the adventure.

Those would be my thoughts because you can create an adventure, people will want to buy the stuff and go try it. I sure would!