I float tubed for many years and still miss it often.....NOT.
Get a fat stable kayak that will not make you feel uncomfortable out there.
Even if you feel like you are going to only fish bays, YOU WILL eventually want to venture out in the open again. You will.
The doctor prescribed patches work great for avoiding sickness, however you will feel a little fuzzy or behind some fog all day. The patch also made me have dry mouth like hell. I can tell you for sure that for ME ,the more I went on the water the less I started puking. I still puke one in a while but thats only when I see George pulling out a limit of WSB.
Don't be stuck on a Hobie, buy something really cheap and later upgrade if you decide to stick with it. Hobies are great (have one) but there are many, many incredible fishermen catching huge fish from non-hobies.
Hey in a kayak you can piss any time, sometimes it might even be not all over yourself!
Welcome to BWE.