According to wikipedia, when using player-used traps, only hard-ranks count into the calculations.
To my understanding, hard-ranks are definitely every single point one puts into the skills every level, resulting in 33 at max level. However what comes later? I figured from asking other players that "soft-ranks" is anything I get from enchanted gear and will not count towards Use Trap. However, what about feats and certain other sources of skill bonuses? I will list them as follows.
Dexterity Ability Modifier bonus
Skill Focus and Epic Skill Focus (+5 and +10)
Skill Mastery (+4 to Set Trap)
Bard songs
Rogue Cunning spell (temporary +5)
If there are any other sources of HARD skills, I would like to know or get attention of developers/admins of this server for a definitive answer. Thank you in advance