an airboat will do that for about $70k except the brush. It's got a tower already built in and it's flats friendly( no prop or oil in the water) . I rode on one with a guide a couple of times. It's a blast. If you've never done it, it's a bucket list thing for sure. The engine was extremely quite which surprised me.
We literally drove up, saw the reds, stopped and caught them. They never knew we were there. He said the noise is all above water so it doesn't spook them. Wouldn't have believed it if I didn't see it. Pretty cool.
With that said, if I had the cash laying around I'd like that shark or a big jet drive about 25' long. The power seems unbelievable.