I have only ever hooked into one pooper on the sup and for the couple runs on my 6WT the boat was moving like it was on a treadmill! I am no stranger to a SUP and have a pretty good sense of balance but there is definitely an increased chance of swimming if you don't have your shit together and stick a hook in one of those freight trains.
Watching SFB expertly stalk, present, hookup, net, photo, smooch then release a poopfish from a SUP with NO SKEG while pushing into a headwind is a thing of beauty. That sup can get up on plane depending on where his drag is at, the advantage of no skeg is he can do off axis spins when the pooper runs under the SUP and goes the opposite direct lol
Not the SFB...
https://youtu.be/8DbQbtPlz_g