Not into a
Casita, but into my
Scamp. I assume, if you want to mount it to a
fiberglass bench, the process would be similar.
According to Lagune, they are made to mount to
fiberglass, and they come with a backing board to distribute the forces. I decided to mount mine with "overkill" in mind. Here are some photos. Should be adaptable to a
Casita. The table is extremely sturdy.
Note: What appears to be the bottom of the brackets is actually the verticle element of the bracket. It was in an awkward postion. But you should get the idea.
The extra wood supports were glued/screwed into position.