Wow, I guess I got lucky with my Leaf Hammock, then. You're the second person who's said the leaf wouldn't stay in the suction cup. My leaf I had to really push it into the holder, it was a tight squeeze. But it stays in without problems.
Dobby's funny because sometimes he sleeps on the leaf, and sometimes he sleeps on the suction cup.
I can't tell if his fins are getting better or not. His tail fin is looking more and more thin and curled and sad, the burns seem to have gotten a little bit worse, but it seems like he's getting new growth on his "tummy fin". *sigh*