Decided it was time, and bought a kayak. A bit of research told me it was gonna cost some serious coin to get one like I needed (stable with a high capacity). After looking at several kayaks, and especially when I had an issue with the seat in an Old Town predator xl upon sitting down (I'm around 350, and it knocked my top 3 off the list due to all having the same seat), I drove up to TG canoe in San Marcos to look at one of the kayaks lower on my list (due to price), and wound up leaving with a Jackson Big Rig after a short demo revealed it was everything I had hoped.
Was told it wouldn't tip, and I pretty much believe it. I tried. Put the seat in the high position and started slowly leaning over. Ended up having to support myself with a hand on the side before finally falling overboard. Looked back, and the yak was still upright, as I had been told. Standing will take some practice, I was able to stand, but was a little shakey to comfortably fish unless I kept my hands on the standup bar (just laying my hands on it to help with balance); leaning against the bar didn't help.
Don't plan to take it on the lakes, as I have a boat and can get where I want. Mainly planning to use it on the bay around the back of mustang island and around Aransas Pass (boat is unsuitable for the salt). All I think I need right now will be an anchor trolley, white light, and a riser for the rod holder it comes with. Oh, and a stakeout pole. Oh, and a better paddle, and maybe a...damn, I was afraid of that!
No fish is too good for the grease.