ORIGINAL: JoeAirPort
I checked my Aerotrend Easy Flex today in my 87" Yak and it's still flexible. I was ready to re-do the tank with neopreme but the clunk was moving all over the tank. Hmmm maybe I got the good stuff. I'll check it again next season.
Actually I ended up taking the tank apart and the Aerotrend was pretty stiff. Not like a stick but more than I would like after one season. It's Neoprene inside the tank from now on. I'll use up my other 4 packs of Aerotrend outside the tank.