Right, I find hammer shark + all 3 stars build is just terrible, most of the time is you dont draw hammer shark, you lose.
I only ever get lbb and star boy 1st turn with that build. Cant even run over harpie fcking 1400 bird.
Far from it. Lost Blue Breaker can be Special Summoned with Hammer Shark, this cannot. Sure, this doesn't require another Fish, Sea Serpent, or Aqua, but you'll almost always have at least 1 on the field, specifically Hammer Shark.
There's still the fact that this card can be used as a beatstick when there's a ocean field spell on the field, It actually has defence, It's also a fish type. That means that it can be used with Fish Depth Charge and Beautunaful Princess. It can still be special summoned if A Legendary Ocean is on the field. Also has some cons, but it depends on the deck you build.