I am raising an ProtoAnt (Antlan/Henger). It is at adventure level
11 and has learned the traits Hyper Beam, King's Fist, Sonic Nail,
Sniper, and Hard Head. For skills it has Fire Punch, Smoke Bomb,
Scissors, Whirlwind, X Blade, Punch Rush, Tail Sting, and Lightning,
but I know it will also learn Crescent, Meteor, Big Edge, and Vulcan
Spark. My problem is that I can't figure out which skills use beams,
fists, claws, head, or shooting. Is there some kind of general rule
like beat skills use fists or does it change for every skill? How can I
tell what skills benefit from which trait? I don't want to have all
these traits if some of them are useless or only good for one weak
skill.

Actually I think that this would be a good column to add to the
charts in Monster Rancher Metropolis: Monster Rancher 4 Archive
(PS2): Skills (Techniques or Attacks): Skill Charts for All Breeds
(Monster Attacks or Techniques).
It could say which trait, if any, affect the skills that each breed
learns. I don't know maybe this is obvious to everyone else. What
dose everyone else think?