I haven't used those, but used to put people in folding chairs when I first
got my boat - it is a "no center seat" jon too. Got seat bases everywhere
now, 8 to be exact, and they're still never in the right place
If I had it to do over, I think I'd go with something like you're looking at.
Did "goose" it to pick the bow up over a big wake one time and flipped
Dad out of a folding chair though, he didn't appreciate it :D