Boomerang Skill Set for Hero
Boomerangs are the worst Skill Set for you to put points into for the Hero. While Boomerangs are good for trash mobs and while you're in the field they aren't useful at all for bosses, metal slimes or the harder fights - which is where you need help the most. With that aside, basically all of the Boomerang abilities that you can get with Skill points are good.
6 Points: Crosscutter Throw - Acts like a regular Boomerang Attack but hits the first enemy twice.
12 Points: +5 Attack while using Boomerangs
18 Points: Power Throw - Deals a little less damage than a regular attack but hits all enemies for the same amount of damage.
25 Points: +10 Attack while using Boomerangs
32 Points: Firebird Throw - Fire Attack that causes 35 - 45 base damage. Damage does not decrease with consecutive hits.
40 Points: +15 Attack while using Boomerangs
52 Points: Super Throw - Replaces the Power Throw ability. Each attack deals a little more damage than a regular attack and the damage isn't decreased for each hit.
66 Points: +20 Attack while using Boomerangs
82 Points: Starburst Throw - A meteor shower that deals 75 - 85 base damage to all enemies.
100 Points: Gigathrow - A lightning attack that deals 145 - 300 base damage and increases how much damage it deals depending on the character's level.