I've been fishing out of a kayak for about 4 years now. All fresh water. I own a bass boat but love fishing out of the yak during the warm summer months where I can hit a small lake/pond/river without having to drive for an hour. I have an Ascend 128FST sold by BassPro. Large and stable (for fat guys like me) I can easily stand in it for longer casts and better hooksets. I've gotten some of my gear from yakattack (
https://www.yakattack.us). My most recent purchase was a command stand. Highly recommend it if you're going to spend a lot of time standing up.