I see a full seat set up on craigslist for 60 bucks. If your anywhere near isanti. Otherwise when my old one broke I fabricated my one and it worked pretty great
I’d call Otter. I had an incident with an otter resort (operator error), and needed the pole spreader bracket in a hurry. For s few bucks, (I believe it was less than $10 cash), they hooked me up.