Fisticuffs Skill Set for Hero
Fisticuffs are the most useless Skill Set for all of the characters in Dragon Quest VIII. However there's one ability in Fisticuffs you'll want to get on at least one member of your team, I prefer Yangus to get the ability over the Hero. This ability is Thin Air, it deals 40 - 50 base damage and increases up to a total of 135 depending on your level.
4 Points: +5 Attack while unarmed
11 Points: Defending Champion - For the turn this ability is used all physical attacks deal 10% of their total damage.
17 Points: Stones Throw - Deals 5 - 20 base damage.
24 Points: Knuckle Sandwich - Deals 50% more damage than a regular attack.
33 Points: +20 Attack while unarmed
42 Points: Thin Air - Causes 40 - 50 base damage and up to a total of 135 damage. The level of your character determines how much damage it causes.
52 Points: Critical Hit Chance Increased while unarmed
70 Points: Multifists - Hits the target 4 times but deals 33% the damage of a regular attack with each strike.
82 Points: Boulder Toss - Causes 70 - 105 base damage.
100 Points: +50 Attack while unarmed