I remember Dr Heart used to post some hybrids pics from his jetski awhile back, haven't seen many posts on jetski fishing, is it practical?
I dunno about 'practical', but it does look fun. And it makes you pick out only the gear you really need because of limited storage space.
+1 on wetsuit (or drysuit I guess). Also a good lifejacket, pop-up signal flares in your pocket, and other safety gear.
"Decency is not news; it is buried in the obituaries --but it is a force stronger than crime" ~ Robert A. Heinlein, 1952
I can't give legal advice yet, but this site may have some of the answers you need: https://texaslawhelp.org/