Stuck inside a water slide rebound chamber at Water Park

While riding a newly built water slide, I got stuck twice inside the rebound chambers. I wasn't sitting high enough on the tube so when I entered the chambers I didn't get enough speed to rebound and make it back into the water stream.
While inside the second chamber I attempted to get back on my tube. I lost my balance and the tube slipped out of my hand. I then had to ride the rest of the way without it.
I'm glad I made it out safely.