lol...i super glued some polyps on an empty hermit crab shell and i buried it one the sand but one of my hermits dug it up replaced its shell with frags on em....i gotta catch that lil booger and refrag it...haha
I would say to let him carry them, he will odds are get tired from the load and swap out the shells..........or he will be a lean and mean buff little dude.
Thats comical, but i would take them off the shell and put them someplace more stationary. All the moving around would cause them to stay closed much of the time.
Man...that is a big group of polyps to go onto that little shell!!!!! I don't think he will carry it after he finds the first open shell....just down let him find one in the back of the tank you can't get too!!!!
LOL! might be a good idea next time to fill the shell with glue or glue the frag to the inside of the shell. This guy reminds me of an anemone crab. hahahaha