Curious what you are using for a big guy set up. I have a kayak and a 12' V hull aluminum can.
Need suggestions on a float tube I can keep in a work truck or a small Mitsubishi mirage (tiny car). I am three thrity so I need something for beast mode dude. I will target catfish and blue hill and yes I have a bum knee that need to be exercised. The more budget friendly the better.

You might try looking into the Outcast Super Fat Cat float tube. It`s pretty good with BIG Guys .I have one but I got rid of the foam back & seat cushions it came with and replace them with the more comfortable inflatable back & seat cushions from www.CreekCompany.com . You can inflate them to suite your comfort level! makes allll the diference in the world.

This one might be the best bang for the buck, very rugged design handles heavy weight, and has four adjustable air bladders for comfort, and is from a good company where I have bought other things before,

https://bucksbags.com/product/roughneck/

North Fork Outdoors also carries tubes for big cargo and passengers but their prices are way higher and they don't come with storage bags in most cases, but they have a reputation for poor service.

I don't own any of these because I need lightweight and compact ones for air travel and easy Portage using back straps while inflated, going upstream. Call bucks to check to see if they fit in the back of a Mirage car, my guess is they will fit since it's a hatchback? The Bucks can handle shallow water with oars or fins / oars can be used in deeper water.

Ps. Creek company hasn't carried replacement seat bladders when you look at their parts , for several years now, and I think they have been discontinued. I had to buy one of their lightweight float tubes just to get the spare seat bladders part.

Gentlemen thanks you for the suggestions.

NorthFork is way out of my price league.

That super cat is really fatso friendly but leave a huge hole in the pockets.. lol

Roughneck seems like it might be the ticket.

Again Gents thanks for the suggestions.

If you need something different. A home made water wagon.