Welcome to kayak fishing and let the addiction begin! Great on you @DerekD for helping so many people enjoy the different varieties of fishing and as @Little_Flatty said, keeping the tackle shop lights on 🤣
As for handling fish in the kayak, I usually keep them in the net and drop them either side the pedal drive where my feet usually are or . Now if they are particularly green and flapping about then I lift the net up so they cant jump out and make an escape. I have a particular large net though, which was made for landbased fishing
In terms of dealing with large fish, i haven't had an issue with that either because i havent caught one 🤣