Used the hole to make it all the way to the snake hole behind the pillars that lead back to pocket D, and to go through bottom of island 🙂
Behind the pillars is 'power dead'. You don't even get inherent fitness jump.
If you use powexeclocation me to summon signature summons (p2w) and you activate the powers in quick succession you can summon more than one. Granted these are 2 million a pop, but I don't think this is intended.