The S-Pop 150 BH Short has a spinner blade off the tail. You can rig a treble on the belly but I wouldn't go any bigger than a ST-76 5/0. You can also run a Baker off the belly with SJ-41 11/0s. If you want to remove the spinner blade, you can run a single hook off the tail like a SJ-51 11/0.
If you want to run two trebles, I'd suggest you go back to ST-66s 5/0s. Two ST-76s will be too heavy.