I am having problems finding boxes to work locksmithing, been in reavers and hounds for a while now and have yet to have a box drop... my locksmithing is currently at 36. Being an explorer my choices are limited to Zoleran. What critter will have the boxes I need defences are in mid to upper 50's and weapons from mid 40's to low 50's

Locksmithing: 36 58% clear

Shield Usage: 56 53% ruminating
Light Armor: 57 59% learning
Defending: 53 09% intrigued
Small Edged: 44 50% mind lock
Bow: 53 41% thoughtful
Crossbow: 46 50% clear
Melee Mastery: 52 48% very focused
Missile Mastery: 55 11% perusing
Evasion: 56 53% perusing
Athletics: 48 23% focused
Perception: 75 21% intrigued
Stealth: 58 52% learning
Outdoorsmanship: 47 87% cogitating
Skinning: 64 04% thinking

The Restless Ranger Rychena

You should be fine to hunt rock trolls, if you pick up HoL (or keep your nature bonus up) it should be enough to get their boxes open.