Hi there! I'm really awful about keeping up on forums but I'm desperate for advice right now!
My partner and I found two abandoned domesticated rabbits out at a wetland restoration site. We could only capture one despite many attempts to get the second. We decided to foster him as our local shelter seemed very full. He was really well behaved so we decided Buckbean could stay.
He was neutered about a week ago now, but is now displaying some really destructive behavior! Yes, I have read in many places: buy things for him to chew on. We have. Every kind of toy made of sisal, wood, grass, you name it. I even gave him a terrycloth washtowel to destroy. He doesn't care because he has only one love: our sofa. It's a nasty old thing with a pull-out bed in it that was left by the previous owners of our house. It's really not something we're that attached to, but having a rabbit shred the skirt of it doesn't look any nicer, and we worry about him ingesting the material.
He does have a nice little (indoor) hutch now, but obviously we don't want to leave him in it all day and night. We've tried separating our enclosed porch to keep him on one side, but he's so determined that he's now knocking down the wood panel barrier we made to get to the couch!
What on earth can we do? I know we can hope that his destructive behavior will fade away in the weeks following his neuter, but for now?! Is the only option to build something out of wood to fortify the couch?
I'm also looking for tips on how to bond with Buckbean. We have no idea what his previous history is. The vet told us he seems to be about a year and a few months old. Sometimes he lets us pet him, but generally is somewhat wary.

[ETA] We tried using hardboard panels. He jumped right over them and onto the couch. This may or may not be a bad thing, as he's only shown interest in eating the skirt around the bottom... but obviously this isn't a good solution either...